ATX vz µATX Power supply form factor.

There are two types of power supply (socket??) available in the market nowadays. They are ATX and µATX.
- How are they differing from each other?
- Are they interchangeable each other?
Say I have MSI785GM-E51 mother board which has ATX form factor while the power supply is µATX, can I use them both/powered the M3A785GM-LE/128M with those ATX power supply?
Or can I convert the µATX to be ATX form factor?

The motherboard mentioned is mATX not ATX 785GM E51. M=mATX (µATX). It's made to fit the smaller cases but can also be used in the larger mid-tower & full tower cases if that's what you have.
µATX PSU has a different size case and mounting dimensions to fit the small mini tower PC cases and also the smaller HTPC cases. Power connections are pretty much the same between the 2 but mATX generally don't have as many power plugs for HDD & ODD.
Due to physical dimensions and different mounting they are not interchangeable.
There are many variables involved in selecting a PSU beginning with what type the PC case itself requires. If you need suggestions on what to get we need to know what CPU, on-board or dedicated graphics you will use, how many HDD's.

Similar Messages

Want references for using ATX power supply with MDD.

There are references all over the place to adapting an ATX power supply for a MDD/FW800. But it would be nice to have links to as many useful ones as possible in one thread -- this one -- without too much superfluous verbiage.
Please post links with brief descriptive comments or, if you have some hard information that's not easily linked to, please post it as concisely as possible. Hopefully, the resulting thread will be useful to many people, and not just to me.

Watch these great YouTube videos
http://www.youtube.com/watch?v=xICg592xJTg
http://www.youtube.com/watch?v=j7RDGy34tjU&feature=fvw
Look at these links.
http://efeion.blogspot.com/2007/12/power-supply-fun-part-2.html
http://www.applefritter.com/node/23857
 Cheers, Tom

Corsair - Professional Series Gold 650W ATX Power Supply

Hello Best Buy community,
I recently placed an order on 01/02 for a power supply. As my computer is down without the part and school is fast approaching (obvisouly I need the PC), I went with Best Buy for express shipping and the estimated delivery date of 01/04-01/05. It's now 01/04 and my order is still processing. I waited for 25 minutes to speak to "customer service" only to be told that the product is a "special order item" but the estimated time of delivery is still 01/04. I'm bright enough to know that an order that hasn't been processed yet today holds no chance of arriving tomorrow. The customer support rep didn't share that same idea, read the info I could check via email myself, and got quiet until I said "thanks for the help".
Upon browsing Best Buy online again, I have noticed that the product is now "sold out online". What is going on? I need this part. Why was I not informed out right my product ordered wasn't even in the Best Buy warehouse, is considered "speicial order", and my wait could be longer because of that?
Solved!
Go to Solution.

Well, your first mistake was buying something from Best Buy in the first place. Unless it was an emergency, their PC components are way overpriced.
You should have either gone through "Newegg" or "Tiger Direct", better service and way better prices all the way around.
Apparently, there's more than enough sheep that enjoy bad customer service, unknowledgable service, and overpriced merchandise to keep Best Buy in business.

Can't fine internal power supply form new sound card

Just installed an asus xonar dx sound card in my slimline s5670t desktop. The problem I am having is that I cannot find the 4 pin power supply I need on the mobo. Can anyone help me out?
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These are the motherboard specifications for your PC.
You probably need to look for a 4 pin molex or floppy connector coming off the power supply. If your don't see a spare connector then you will need an adapter to split off from a molex connector or even off a sata power connector. Look carefully at the power cable going to the hard drive. This is where you might try a Y splitter power cable. www.newegg.com probably has want you need.
Maybe this adapter would work. I can't say if the connector is right for tapping on the sata drive for power or if the cable lengths are long enough.
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
HP Photosmart Premium C309G, HP Photosmart 6520
HP Touchpad, HP Chromebook 11
Custom i7-4770k,Z-87, 8GB, Vertex 3 SSD, Samsung EVO SSD, Corsair HX650,GTX 760
Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT

**** ATX Power Supply +28V Step-Up Voltage Regulator How to ****

I'm going to try this with an atx supply for a spare MDD I have.
Here is the schematic:
http://homepage.mac.com/baakre/public/files/28v_vreg.pdf
Here is a thread on a diy job (have not finished reading it so I don't know the results yet)
http://episteme.arstechnica.com/eve/forums/a/tpc/f/8300945231/m/4820959925/p/2

Look in the example finder for DAQmx functions for analog input and analog output.

Saturn (Phoenix+) MS-6309 ATX form-factor motherboard

my mother board says it can support agp x4, but i have a new grapgics card a MSI geforce 4 ti 4200. and it says it is only running at x2. how do i make the computer run this new card at x4?
cheers

agp 1.0 means board cannot run agpx4
Product Family Saturn (Phoenix+) MS-6309 ATX form-factor motherboard
Category Core
Product Introduction
Table of Contents
Revision History
Specifications
Form Factor
CPU Support
System Memory
Core Logic (Chipset)
BIOS Specifications
Upgrade Options
Connectors on board
Compliance
Revision History
Partnumbers Revision # Changes
6780660200
6780660300 1.0 -
6780660400 1.1 4 USB ports support
6780660500 1.1 -
6780660800 1.2 CPU stepping D0 support
Specifications
Form Factor:
ATX 30.4cm. x 19.2cm Form Factor
CPU Support:
Socket 370
Supports Intel PIII Coppermine FC-PGA (Flip-Chip Pin Grid Array) processor 600/100 - 850/100 MHz
Supports Intel PIII Coppermine FC-PGA (Flip-Chip Pin Grid Array) processor 600/133 - 1000/133 MHz
Note: above CPU's are only supported with the latest BIOS version.
66/100/133 MHz Host bus speed processors are supported.
System Memory:
Supports 6 memory banks (3 slots) using three 168-pin unbuffered DIMM.
Supports single or double-sided DIMMS with gold-plated contacts at a clock speed of 66, 100 or 133 MHz.
CPU Bus Frequency Memory Frequency Supported
66 MHz 66, 100 or 133 MHz
100 MHz 66, 100 or 133 MHz
133 MHz 100 or 133 MHz
Supports a maximum memory size of:
768 (128-bit technology) or 384 MB (64-bit technology) registered DIMMs
1.5 GB unregistered DIMMS (256-bit technology)
Supports 3.3 V SDRAM DIMMs
ECC memory checking is supported
Core Logic (Chipset): VIA Apollo Pro133A
VT82C694X system controller
AGP/PCI/ISA Mobile and Deep Green PC ready
GTL+ host bus supports write-combine cycles
Supports separately powered 3.3 V (5 V tolerant) interface system memory, AGP, and PCI bus.
CPU Interface
66/100/133 MHz CPU Front side bus
Sleep mode support
AGP Controller
Synchronous and pseudo-synchronous with the host CPU bus with optimal skew control
PCI AGP CPU Mode
33 MHz 66 MHz 133 MHz 4x synchronous
33 MHz 66 MHz 100 MHz 2x synchronous
33 MHz 66 MHz 66 MHz 1x synchronous
AGP 2.0 compliant
Supports SideBand Addressing (SBA) mode
Graphics Address Relocation Table (GART)
PCI Bus Controller
Supports up to 5 PCI masters
PCI 2.1 compliant, 32-bit 3.3 V PCI interface with 5 V tolerant input
Advanced DRAM controller
DRAM interface synchronous with host CPU (66/100/133 MHz) or AGP (66 MHz) for most flexible configuration
Concurrent CPU, AGP, and PCI access
Different DRAM types may be used in mixed combinations (FP, EDO, SDRAM, ESDRAM and VCM SDRAM)
Different timing for each bank
Optional bank-by-bank ECC (single-bit error correction and multi-bit error detection) or EC (Error Checking only) for DRAM integrity
Advanced System Power Management Support
Dynamic power down of SDRAM
Independent clock stop controls for CPU/SDRAM, AGP, and PCI bus.
Suspend-to-DRAM and Self-Refresh operation
510 pin BGA package
VT82C686A PCI to ISA bridge
PC98 compliant PCI to ISA bridge
Integrated ISA Bus controller with integrated DMA, timer, and interrupt controller
Integrated Keyboard controller with PS/2 mouse support
Integrated DS12885-style real Time Clock (RTC) with extended 256byte CMOS RAM and day/month alarm for ACPI
Integrated USB controller with root hub and four function ports
Integrated UltraDMA-33/66 master mode EIDE controller with enhanced PCI bus commands
PCI 2.2 compliant with delay transaction and remote power management
Supports Type F DMA transfers
Distributed DMA support for ISA legacy DMA across the PCI bus
UltraDMA-33/66 Master Mode PCI EIDE Controller
Dual channel master mode PCI supporting 4 Enhanced IDE devices
Transfer rate up to 33 MB/sec to cover PIO Mode 4, multi-word DMA mode 2 drives, and UltraDMA-33 interface
Support ATAPI compliant devices including DVD devices
Supports PCI native and ATA compatibility modes
Integrated Super I/O controller
Supports two serial ports, IR port, parallel port, and floppy disk controller functions.
Two UARTs for complete serial ports
One dedicated IR port
Multi-mode parallel port: standard mode, EPP and ECP support
Floppy disk controller (16 bytes of FIFO, data rates up to 1Mbps)
USB controller
USB v1.1 and Intel Universal HCI v1.1compatible
Legacy keyboard and PS/2 mouse support
Voltage, Temperature, Fan speed Monitor and Controller
five positive voltage, three temperature, and two fan-speed monitorings
programmable control, status, monitor, and alarm for flexible desktop management
internal core VCC voltage sensing
System Management Bus Interface
Plug and Play controller
352 pin BGA package
256-byte battery-backed CMOS SRAM Real Time Clock (3 volts lithium battery - CR2032).
BIOS Specifications
AMI BIOS with Plug and Play, Advanced Configuration and Power Interface, Advanced Power Management, and Desktop Management Interface support.
2Mbits flash device.
Language support: English.
POST
Upgrade Options
5 PCI extension slots
1 AGP connector
1 Audio Modem Riser connector
Bios: flashable Ami BIOS
Memory:
Supports single or double-sided DIMMS with gold-plated contacts at a clock speed of 66, 100 or 133 MHz.
Supports a maximum memory size of
768 (128-bit technology) or 384 MB (64-bit technology) registered DIMMs
1.5 GB unregistered DIMMS (256-bit technology)
Supports 3.3 V SDRAM DIMMs.
ECC memory checking is supported
8 to 512 MB memory modules are supported
CPU:
Socket 370
Supports Intel PIII Coppermine FC-PGA (Flip-Chip Pin Grid Array) processor 600/100, 650/100, 700/100 MHz and faster.
Supports Intel PIII Coppermine FC-PGA (Flip-Chip Pin Grid Array) processor 600/133, 667/133, 733/133 MHz, 800/133 MHz, 866/133 MHz, 933/133 MHz, 1000/133 MHz and faster.
66/100/133 MHz Host bus speed processors are supported.
Connectors on board
5 PCI bus masters slots
1 AGP slot
1 AMR slot
1 socket 370
3 DIMM
2 IDE
1 Floppy
1 CPU fan
1 System fan
1 ATX power supply
1 Wake-on-LAN
1 Front panel header
1 Front USB header
Compliance
Specification Description
ATX ATX form factor specifications
AGP 1.0 Accelerated Graphics Port
you need agpx 4 graphics port

Guide for Selecting a Power Supply

Mod may want to make this a STICKY.
Here's a general guide on how to select a PSU for your HP desktop. The majority of standard ATX powersupply (PSU) should fit inside an HP case. The exception would be a slim line case or the esoteric Blackbird.
Look for an 80+ certification on the PSU to save electricity. A PC will normally idle or run at low load 75% of the time. Therefore, look for a PSU that's more efficient in the 50-90W range. An 80+ 350W PSU reaches the 80% efficiency level at 70W output (20% of rated output). The output must be greater than 140W to achieve the same level of efficiency from an equivalent 80+ 700W PSU. So picking a PSU that is rated 25% higher than the maximum ACTUAL load of the rig will save you more $ on electricity.
A modern PSU is designed to achieve peak efficiency between 20 and 80% of the rated output. Running a PSU above the 80% load level will result in excessive heat, noise, and premature failure.
An Nvidia rig with GeForce GTX 280 (1024MB on board RAM) will draw about 350W max from the wall. If we factor in the efficiency of a 80+ PSU, then the actual load on the PSU is only 280W (350 x 0.80). To calculate the required PSU, multiply the actual load by 1.25 (25% margin). In this case we only need a 350W PSU (280 x 1.25) to run this GPU.
Let's apply what we know to a Radeon HD 4870 (512MB on board RAM) rig. 290W max from the wall. Actual load is 290W x 0.80 or 230W. Now apply the 25% margin rule and we arrive at a PSU requirement of 290W (230W x 1.25). Even if we apply a 50% safety margin, the power requirement is still under 350W (230W x 1.50).
There is no need to overspec the PSU by 50% unless you run your PC at full load 24/7. Keep in mind that there is a huge variation in PSU quality and rating. A cheap 500W PSU may not be able to deliver as much power as a quality 350W. Antec Earthwatts/NeoPower/TruePower, Corsair, and Seasonic are quality units widely available at many US retailers.
Many high-end PSUs will need additional power from the PSU in the form of one or two 6/8 pin GPU power plug. You can purchase an adaptor to convert a 4-pin molex to 6-pin GPU power plug.
http://www.tomshardware.com/reviews/geforce-radeon-power,2122-3.html
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View Solution.

Found a review of the Corsair 400W (Seasonic-built power supply) that I've been recommending on this forum. This ATX power supply should fit inside most HP case (minus Slimline). It has ample power to drive a modern quad core plus Radeon 4870 or GTX280 video card.
At 100% load, we see a 2.5% drop in the +12VDC rail, which is still within spec and does not affect the performance of any component inside the PC. +12VDC regulation at 82% load is a superb 0.5% with 45C case temperature. Note that the power output and efficiency decrease with higher temperature.
Cheap power supplies are rated at 25C. When these units are subjected to higher case temperature, the output can drop 10-20%.
Again, we discover the sweet spot of a good PSU is 20-80%. A good 400W PSU is more than adequate for many PC users. This Corsair is only $30 after a $10 rebate. That's a great price for a quality/quiet PSU that won't put a huge dent in your wallet.
http://enthusiast.hardocp.com/article.html?art=MTYwOSw1LCxoZW50aHVzaWFzdA==
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008&Tpk=corsair%20400w
Additional 20% off w/ promo code "Mar20", ends 3/31
Message Edited by RoyalSerpent on 03-08-2009 11:40 AM
Message Edited by RoyalSerpent on 03-08-2009 11:42 AM
Message Edited by RoyalSerpent on 03-08-2009 11:45 AM

Shock Therapy - An Athlon64 / FX Power Supply Guide

I used to make a hardware list of all the components I would like to incorporate in my next
computer build. Normally...at the bottom of that list would be the power supply, not that I
didn't think it was important, it's just that my other hardware was so interesting! Today, power supplys
seem to take a back seat to blazing-speed CPU's, Dual-Cored processors, glitz and glamour
video cards...not to mention supersonic, heat-sinked RAM and modular, gizmoe'd PSU's promising not
only over-achiever specifications, but eye-candy as well. The lowly PSU....tucked up somewhere inside
it's dark and lonely loft....effortlessly supplying us with the energy required for important 3D imaging
or just funning with the latest games.
What a power supply does is rather simple. It converts your office or home's socketed electricity to
usable 3.3v, 5.0v and 12.0v energy...that's all. A power supply that cannot efficiently do this will-
over time-cause computer crashes, continuous reboots and shutdowns, and worse...expensive component damage.
And now, with faster processors such as AMD's Athlon64 and FX line of CPU's, never has there been a time, when
choosing the right power supply is so important! This article is written for those using these high-powered CPU's!
Well...Do we have your attention!?
If you are experiencing these problems, or still scratching your head over that last RMA....could be
your PSU is trying to tell you something.
To begin with, a power supply's ratings refer to its maximum output under ideal conditions. No power
supply is 100% efficient. In high-quantity manufacturing, power supplys may not put out any more than 60% of
their advertised specifications. In any PSU, that rating can be further reduced by the effects of heat
and electro-magnetic radiation. That's where "switching" power supplys come in. A switching power supply draws
only as much current that is needed from the AC input. Buying a hefty PSU with this feature will guarantee
that you will be paying no more for electric service, than you would with a cheaper, less powerful unit.
One of the most common causes of power supply inefficiency, and ultimately failure is dirt. Dust and
foreign materials can cause the beginning of the end for a power supply, by attacking the fan first.
It begins by slowing the fan down...thus creating heat through friction, then ultimately burning it out.
PSU's with high-quality ball bearing fans are a must. They are far more durable, and not as likely to
become noisier as time goes by.
As a general rule...a failing PSU will usually emit abnormal sounds, followed by unstable voltage readings....
then the computer crashes or lock-ups, with random shutdowns, and sometimes...refusal to even power-up.
If you think your power supply is on its last leg...better to deal with it now, or face the more serious dilemmas later on.
APM (Advanced Power Management)
APM is a feature originally developed by partners, Microsoft and Intel. It relates to a systems ability
to utilize different states in regards to a systems utilization of power. On, Off, Standby and Suspend
are examples...these are BIOS features, not PSU functions. APM only requires of the power supply, the
function to turn power on or off through an electrical signal, and the presence of stand-by voltage.
All ATX power supplys are required to incorporate this feature. However, if some components in a computer
are not APM-compliant, your system may encounter errors or freezes when going into hibernate or stand-by
modes.
ACPI (Advanced Control Power Interface)
It's the latest power management control that was developed by a conglomeration of IT corporations. This interface
is O.S. derived, rather than BIOS, and all ATX power supplys should be ACPI-compliant. You should not have to be
concerned about this feature.
Line-Conditioning Circuitry
A power supply component that helps control power levels, spikes and surges in
the most unreliable of home sockets.
EMI Filter
This circuitry smooths the fluctuations of incoming AC currents, also known
as Electro-Magnetic Interference - EMI filters are usually found in higher-end power supplys.
PFCC
Power Factor Correction Circuitry...smooths out sudden, initial spikes in power
delivery - reducing amplitude and preventing circuit overloads.
Connectors
There are five main connectors found on the latest version ATX power supply.
1) ATX main power connector - 20-pin, 24-pin, and 20 to 24-pin adapter.
2) ATX 12v power connector (4-pin to CPU)
3) Molex peripheral power connector
4) Floppy power connector
5) Serial ATA power connector
On newer SLI-certified power supplys, you'll find two 6-pin video card connectors.
Know What You Need
When purchasing a power supply, make sure your parts list is all-inclusive...know ahead of time, what you expect to
install in your system. You should also visit the motherboard manufacturer's site, as well as the CPU's. Most of the
products will have specifics regarding power supply requirements needed for that specific component. Unfortunately, you
really won't know how well the PSU performs until it is installed and running your system (hopefully!) This is the main reason we
recommend the most popular brands - power supplys that have shown a duration of manufacturing quality over the years. Those are
as follows: Antec, Enermax, OCZ, PC Power and Cooling, Tagan, and a few newcomers such as SeaSonic and Silverstone are
worth looking into.
If you believe you have found the PSU of choice, remember this: AMD recommends a minimum 350 watt power supply to run
Athlon64 and FX CPU's. To that, add the 30% for power lost to heat, and the subsequent electro-magnetic radiation. Hold on with that
calculator...throw in an additional 40% to 60% for the "potential" inaccuracies of specifications inherent in mass-produced electronics.
Pay special attention to outputs on either single, or dual rail +12v lines. A motherboard, CPU, and graphics card can consume up to
150 watts alone - before hooking up your remaining components. If running an SLI configured board, look for a PSU that is certified
to run that configuration...there's only a few PSU's that lay claim to that!
Broken down, you can look at it this way: An Athlon64/FX processor can use up to 90 watts off the +12v rail. High performance RAM
can take in about 25 watts for each stick of 256MB system memory from the +3.3v line. PCI cards will use about 10 watts each, while
an AGP video card can consume about 50 precious watts alone from the +5v or +12v. Hard drives? A 7,200 RPM drive...about 15 watts
each, taken from the +5v and +12v rail. Finally, but not absolutely is the optical drives...robbing about 20 watts each, also from
the +5v and +12v lines. So you see....not only is the +12v amp ratings of concern, but also the +5v line!
In doing the math...on a system incorporating an Athlon64 (say a 4000+), 2 sticks of high-end RAM, 2 or 3 PCI cards, 1 mid-to-high
end AGP video card, 2 ~ 7,200 RPM hard drives, and a couple of CD/RW or DVD/RW opticals...you're looking at a "base" requirement of 270 to 325 watts. That's for a running system...now figure boot-up loads, 30% for heat and radiation bleed-off, then a 40% safety factor for manufacturing inconsistencies...you've got a power supply in the 450 to 520 watt range!
Modular Power Supplys:
The pins that are used for the modular plugs are not very good at passing current. It's basically electrical resistance between the male and female components, and voltage "drops" are likely. In real world events, they will become loose, dirty, corrosive, and eventually burn. You can figure about 10% less efficiency with a modular power supply.
Now you can understand how manufacturing "tolerances" that are inaccurate by 40% to 60%, can have such a devastating effect on
the performance of your new system. If you follow these simple guidelines, bearing in mind the hardware you will be using, and what
your intended use of the computer is for...then it will be one less dramatic incident when pushing the power button for the first time!
Here's a neat little tool....a bit out of date - that can give you a basic idea of what you'll need in a PSU.
You can apply the percentages above, for an even more accurate assesment of your PSU requirements!
http://www.jscustompcs.com/power_supply/Power_Supply_Calculator.php?cmd=AMD

Quote
In doing the math...on a system incorporating an Athlon64 (say a 4000+), 2 sticks of high-end RAM, 2 or 3 PCI cards, 1 mid-to-high
end AGP video card, 2 ~ 7,200 RPM hard drives, and a couple of CD/RW or DVD/RW opticals...you're looking at a "base" requirement of 270 to 325 watts. That's for a running system...now figure boot-up loads, 30% for heat and radiation bleed-off, then a 40% safety factor for manufacturing inconsistencies...you've got a power supply in the 450 to 520 watt range!
Well, except the CPU, my system has all that you mentioned there (I even have 3 optical drives). And my 350W PSU has been rock solid for more than a year (BeQuiet, = Tagan, IIRC). I don't think a 4000+ needs 100W more than my 3200+ . And that link you posted says that the minimum recommended PSU for my system is 506W xD. Come on.
Oh, and in the place I work there are 6 amd64 with GeForce 6800 GT and 2GB RAM with 380W Antec PSUs. All 100% stable, of course.
I would only go for >400W if I wanted to do extreme OC (with overvolting), or SLI. Otherwise, a good brand 350W PSU is more than enough.

Power supply from g3 into a g4?

Hi ! i have a G4 533 which is kinda dead, and have a B&W G3 which is fine. i wanted to try to switch the power supplies, but i thought i'd ask here first to see if anyone knew if they were compatable. MOst of the number specs look the same, but not 100%.
thanks for any help!
j

The Digital Audio G4 and Gigabit Ethernet 22 pin Power supplies are interchangeable and have a nasty habit of dying which is why they are so expensive on the used market. No other Mac PSU will work in either model.
You can convert an ATX power supply to work but it's a little complicated. See this link:
http://forums.macrumors.com/showthread.php?t=261623

Looking to upgrade the video card and power supply in the K330

Hello, I'm looking to upgrade the power supply and video card in the Lenovo IdeaCentre K330 but I need to know if these parts will be accepted by the mobo.
Here's the card name (no link, don't know if theres a restriction to off site links) ASUS 2GB GDDR5 DIGI+ VRM technology Graphics Cards HD7770-2GD5
The power supply name follows: Xion High Performance 1000 Watt ATX Power Supply XON-1000P14F
Thanks for reading, and extra thanks for a good reply

Thanks for replying, I have looked into other PSU's and came up with this: XFX PRO750W Core Edition 80+ Bronze ATX 750 Energy Star Certified Power Supply
Feedback? And main question is, will they both (video card and PSU) be compatible with the motherboard that come standard in the K330?
I don't really have a need for the front panel except the power, and backontrack buttons.
Also, the reason why I'm getting a high wattage PSU is because I might later decide to build my own PC with the upgraded parts, and put the old parts back into the K330

Is it the power supply... or the motherboard?

Lets start of with specs...
K7T266 Pro2 Mainboard
AMD Athlon XP 1700+
nVidia GeForce 3 Ti 500
Creative Labs Audigy MP3
Western Digital 80 GB Hard Drive (7200RPM)
IBM 40 GB Hard Drive (7200RPM)
Mmkay now... I just installed some nifty lights and a window on my case, I don't think that is the problem though. Whenever I go to putting in the 20 pin ATX power supply thingee, nothing happens to the mainboard, nothing lights up... sometimes when I put in the cable different ways, or with my hand further away from the connecter, the lights get a faint glow, the fans turn on, but the hard drives don't. This has happened 3 times to me, and I don't know what the problem is.... the first time it happened I thought my power supply was fried so I ran out and bought a PSU tester, all was fine so I knew it had to be the mainboard. It wasnt. Some of the little doodahs inside the connecter from the power supply werent pushed in (or is it out?) far enough, aka some wires were just slipping out from the connector. The second time, I went to take apart the computer to dust it and the same thing happened.
This time, is the first time I had the lights and the window on the case, so when I plug in the PSU tester to the power supply, everything lights up and turns on (except the mainboard which isnt plugged in). So then I plug it into the mainboard's connecter, it doesnt turn on. I have been fiddling with it for 20 hours and even used a dremel to shave off some of the plastic on the PSU's connecter, so the wires in the mainboard would hit the ones on the connecter. They didn't.
Now I am asking you, if you can understand what I just said ( :D ), what is wrong with my computer.
I'll take some pictures and show you what is happening...

I do not think it is the connector to the MB, the PSU or the Mobo. I think you somewhere have a short-circuit. It might be that it is in a place so that it only occurs when you have "fiddled" with the innards of your case.
Try and search for anything that might be causing a short circuit.
Remember that some lights (dont know correct english word for the type here) might in some situation be considered a short circuit (and might cause your PSU not to power up).

HP Pavilion s5-1224 (Windows 7 64-bit) power supply problem

Can 550W SATA Power Supply work/ fit my hp pavilion model: s5-1224?
link:
http://www.ebay.com/itm/550W-SATA-Power-Supply-New-design-with-larger-fan-Pulled-from-HP-Pavilion-/2...
I want to upgrade my power supply, but I am not sure if this will fit.
Any replys will be appreciated

I would be a little cautious when ordering from eBay. It's a used power supply for $5 and the seller used a HDD term (SATA) to describe the power supply. Granted, they could just be saying that it does have SATA power connectors.
It looks like a standard ATX power supply.
To answer your question, no that power supply will not fit your system. Your particular system is a slimline and requires a unique power supply to fit the case.
The following is the original power supply your unit came with. You will need one that is like it.
http://www.amazon.com/Genuine-Original-Supply-FH-ZD221MGR-633195-001/dp/B00BJ0QW16
This site claims it is a slimline power supply and provides the dimensions of the power supply. I would get the dimensions of the power supply currently in the system. If they match, then that would more than likely be an upgrade for your system.
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How to check the power supply? iMac G3 233

How to do it?
Can i just take the case with the mainboard out and "short" the pins Power on (pin 8) with GND and check the voltages on the connector that comes out of the monitor case?
I know that the pin 8 is the power from articles about imac>atx case conversion.And i know that you can power up a normal ATX power supply by shortening two pins, and want to know if i can do the same with iMAc power supply. I don't want to fry anything.

Sounds like you have eliminated most of the possibilities, other than power supply board or motherboard. But it may also be the CPU daughter card that is faulty. I had one (233 MHz) that would run Mac OS 9 just fine, but it was unable to run Mac OS X reliably (crashes and freezes after a few minutes). I replaced it first with a 333 MHz G3 card off of eBay and later with a 467 MHz G4 card from the Fastmac booth at MacWorld San Francisco two years ago.
If you are comfortable disassembling the iMac to the point of removing the power supply board, you can layout the PS board and the carrier assembly (the thing you pull out with the motherboard, CPU card, and drives) on a table top. Then connect the power supply board to the carrier assembly, and connect the external power cord plug to the power supply board, and connect a keyboard with a power button to the carrier.
To measure the voltages, you can disconnect the 4-pin connector to the hard drive. If you turn it on using the power button on the keyboard, it will not start up with the hard drive not powered up (unless you use a bootable CD), but the system should be powered so that you can take your measurements.
Hope that works. Be careful with the exposed back end of the CRT. Keep any curious cats out of the room while you do this...
In case you don't have the PDF of the tray-loader iMac tech manual, it is downloadable here.
http://www.baconeggs.co.uk/manuals/index.htm

Third party power supply?

Greetings,
May I replace my Power Mac's power supply with a third party one?
Thanks

You can use an ATX PC-type supply, however, it has different connector pinouts. You can use one of these adapters, ATX power Supply Adapter http://atxg4.com/
 Cheers, Tom

HP DC7700 Power supply

I got this motherboard and no power supply. I want to know what power supply to use and also if possible what is the pin configuration for the onboard micro ATX plug so that I can use a normal ATX power supply.
This question was solved.
View Solution.

Thank you for the additional information.
Here is a search page for your computer:
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/search/?sp4ts.oid=3232030&spf_p.t...
Item #1 is the Illustrated Parts & Service Map for it. It will show you all of the components and their Part #.
Please click the "Thumbs up + button" if I have helped you and click "Accept as Solution" if your problem is solved.
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HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1
HP Photosmart 7520 AIO
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ATX vz µATX Power supply form factor.

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