Which iMac usb port is high power?

Which iMac USB port is high power?

I'm not sure this is the case, at least on the newer iMacs. Some ports will adequately power some devices (most notable the USB Suerdrive) while others won't. Or, this has been the case recently, anyway; USB with Apple devices seems hopelessly arcane anyway, which makes no sense at all!)

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I have had IPhones since their inception. Last phone was the 5. A few months ago, I upgraded to the 6 Plus. Here is my issue. On my 5, my car radio (which has USB port) allowed me to plug in and listen to radio or music from my phone and the bonus

I have had IPhones since their inception. Last phone was the 5. A few months ago, I upgraded to the 6 Plus.
Here is my issue.
On my 5, my car radio (which has USB port) allowed me to plug in and listen to radio or music from my phone and the bonus was it charged the phone as well. All worked great.
Now with the 6 Plus, neither of things work. The message on the radio (Kenwood) says I Pod error. The message on my phone say's "this device is supported".
I have called on this before and was told you are aware and that the issue will be addressed in a future update. There have been several updates on IOS 8 and the issue remains.

I have a Kenwood KDC-X695. When I purchased this stereo and had it installed, I had an ATT iPhone 4.
It worked with the stereo, but had a few issues. I had purchased a few audio books that I would listen to while driving. When I plugged it in it would immediately begin to play the book from the beginning or if I had been listening to music, it would start playing the song that was at the top of the song list.
The stereo came equipped with Firmware version 3.05. I upgraded to the iPhone 5 a year later. I had that phone for approximately 2 years. The song or book issue remained the same.
I just recently upgraded to the iPhone 6 and the Bluetooth function still works, however the USB port on the stereo that the phone plugs into to allow files on the phone to play through the stereo no longer works.
I contacted the service provider (Verizon) and after speaking to several different technical support technicians, they provided me the phone numbers for Kenwood and Apple because they were unable to help me.
I spoke with Kenwood technical support the following day and after a few fumbling miscues from the technical advisor, it was suggested that I upgrade the firmware, even though the Kenwood literature warns against this if the Bluetooth portion is working, because if there is a problem with the upgrade, it can render the Bluetooth useless and non-functional. The advisor did suggest the latest firmware on the second or third attempt, after I pointed out what I was able to glean from my initial search.
Later that day, I went back to the Kenwood site (from their homepage) and by using their selection tools, discovered that this particular model was only ever intended to be used with the iPhone 4S (the technical advisor was not aware of this, even though I mentioned this during my phone call earlier in the day). According to the Firmware selection tool, my iPhone 5 should not have worked with it.
I performed the Firmware upgrade, and it took 13 minutes. This was less than the 15 minutes that was forecast in the Kenwood literature. The Bluetooth still works but the USB cable connection still causes the unsupported device message that I received prior to the upgrade. I am incredibly annoyed and disappointed.
By upgrading to the iPhone 6, I have three choices; (1) only use the Bluetooth for phone calls without the ability to play other files from my iPhone 6 (2) forced obsolescence of my stereo, requires buying a new stereo (3) return my iPhone 6 and go back to my iPhone 5.
I do not believe that I should have to be a software/Firmware/hardware engineer, vetting every single device that I own; prior to upgrading a cell phone.
I am incredibly annoyed with Apple at the moment.
I have a separate Bluetooth headset that worked with both my iPhone 4 and iPhone 5 that the iPhone 6 simply does not recognize. That is another story for another time.
Currently, I am incredibly underwhelmed with Apple.

Will the PB G4 USB-ports provide sufficient power for external HDD ?

I am in the market for a 2,5in external HDD, preferably powered through the USB-ports of my PB G4. However, I have read that in many cases, Apple's laptops provide insufficient power for such devices. Is this a fact?
The drive I'm currently looking at: Western Digital Passport 120GB USB2.0 (WD Passport WDXML1200UE)

Dear Thosen, yep this can be a problem with the 12' models, I think that there are adaptors, that use both USB ports, one of power and one for data transfer. The other option is to try a firewire drive - this has the added advantage of being bootable.
bw
Andrew Platt

Will power interruptions cause iMac usb ports to fail?

When electrical power is disrupted and subsequently restored can iMac on board USB ports be damaged to the point of total failure? If so, how can these
ports be properly protected? Thanks for any advice.

APC is the big name. You can find them at all sorts of places. They make quite a few models. If you live someplace where power failure is common it's probably best to shut down before leaving but assuming your home, if your battery backup is good for 10-20min tha'ts plenty of time to shut down. I have my computer and external drives on battery backup. My second monitor, printer and such are simply on surge protector circuits. Most UPS units have some plugs that are just surge and other plugs that include battery backup. You will want to find out how many watts your computer uses and any other peripherals you use to guage which battery backup system you need to provide as many minutes of backup as you want.

Which USB port for extra power for external Superdrive?

I just bought an external USB slimline optical drive that doesn't use AC power, instead it comes with a USB Y-connector so that it can use two USB ports for power. I can't really spare the extra port. I read that the Mac mini 2011 is compatible with the Apple USB Superdrive. It does this by supplying additional power over USB, like the MacBook Air. I've tried my drive with just a single port and it powers on and can do some stuff, but suddenly it'll crap out and the OS will tell me the disk was removed without being ejected. I've determined it's a power issue. Does anyone know which port in particular the extra power is delivered through? I'd test myself, but I'm afraid I may be damaging the optical drive when it craps out.
Thanks

I'd get a good AC high powered USB Hub...
http://eshop.macsales.com/item/NewerTech/USB2HB7PRO/
http://eshop.macsales.com/item/MacAlly/TRIHUB4/
USB thing reproduce like Rabbits!

Imac usb ports stopped working?

i was using a new 10 usb hub, imac said something about draining power and then froze now only one of the three usb ports worked.
i have reset PRAM and SMC
completely unplugged power and still the two ports do not work..any help

Hi, is his what you tried...
reset FW bus, same goes for USB reset...
Reset the Firewire bus
If your Firewire or USB isn't recognizing any device. A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:
1. Shut the machine down.
2. UNPLUG the power lead to the computer and any firewire/USB drive or devices.
3. leave it for 10 minutes.
4. Connect back up and reboot.
http://www.macmaps.com/firewirebug2.html

Aluminum iMac USB port dead?

Hello,
I think one of the USB ports on my Aluminum iMac (2.0 GHz) has stopped working. When I plug in my iPod into this particular port it no longer recognizes the iPod, however when I move the iPod to another port it is recognized. The port worked fine last week. I've tried other things in this port (e.g. USB hard drive), and it's the same thing.
Could this still be a software issue, or is this pretty much a hardware problem?
Is there any other troubleshooting I can do before calling Apple?
Thanks for any help.

Hm thanks for the idea den.thed
So how do I then see that something is slowing everything down?
Here is my tree
http://img408.imageshack.us/my.php?image=picture28et1.png
What I find mostly strange is that apparently there are 2 "USB BUss" which are not being used.
No idea where those are sitting, because all my 3 USB Plugs in the back of the iMac are used up.
Maybe they are 2 free ones in my Mac?
Then what also suprises me it that there is another USB Hub in my USB Hub?
I only have one USB hub, that hub as oyu can see has 2 leaves.
One an external harddrive, the other leaf is a USB Hub with the iPod and another external harddrive.
And as mentioned above I don't know where to look now for the thing that is slowing everything down.
How do I recognize that?
Thanks a lot

USB ports have no power

It first started happening on my Late 2012 model iMac 21.5" a couple weeks ago.
What I found was that nothing seemed to work when connected directly to the iMac's USB ports. However, if you attach an externally powered USB hub, then all devices attached to the hub will work. So, it seems as if the USB ports are still working, but without power.
After I was able to get my USB keyboard to work using the powered hub, I was able to zap the PRAM by holding command-option-P-R while powering on, and then magically everything was back to working again. Unfortunately, this was short lived as the problem has resufaced again for me.
Has anyone else seen a problem like this? Do I need to send it back to Apple for warranty repair?

Call AppleCare & tell them exactly what you stated in your post.

Mac Pro USB ports constantly losing power!

Hi,
Ive been looking through this forums but I havent been able to find a solution to my problem.
Ive got a 2008 Mac Pro and recently Ive been experiencing some issues with its USB ports.
The front usb ports have a USB antenna connected and some time later, it just loses power and I have to disconnect it and connect it in order to make it work again. Besides that, Ive got a USB hub connected in one of the back ports. In it, is my camera and my keyboard. After some time, it just loses power. Not at the same time than the usb antenna, but in less that an hour I have to repeat the process 2-3 times.
Worth to note, that in the two back usb ports left, Ive got an external hard drive in each and I dont have problems, there are always seen in the finder.
Some help would be great
Thanks in advance

Im running latest snow leopard.
I gave up and just used a cable for internet and a bluetooth keyboard.
I couldnt figure out why the usb antenna loses power. Though it still has a blue light linking.
What has been happening to you???

USB ports -- not enough power error

Hello, I tried to connect my blackberry phone to my Mac Powerbook, running leopard, and on the phone's screen, it warned me that there was not sufficient current or power in the USB to use it. It told me to make sure that the drivers were installed. What's wrong?
~Psych

actually issue is even worse...
usb ports don't work left and right.
yesterday they were not even turning devices on >(i.e. my cruzer 1gb disk)
today it recognizes devices ( i see them in system profiler)
but they are not seen by the system.
i tried 2 different usb keys, 2 different hd, 1 ipod 4g, nothing at all...
actually behaviour is a little bit different left to right (something is seen 1st shot on one side, after some tries from the other)
still, EVERYTHING WAS WORKING PERFECT 3 DAYS AGO!!!!
will change it for an mba
Steve: ANY HINTS????

HP Pavilion dv6 2670qm - Windows 7 - USB ports do not power iPAD mini

All of my USB ports work fine with media drives and to connect to my Android phone.
My problem is that they don't provide power to my iPAD mini. i spent 45 minutes at the Apple store uninstalling the Apple mobile drivers and iTunes and re-installing them. The Apple tech recommended that course of action. Unfortunately it made no difference, still no power to the iPAD mini. My iPAD mini and cable work with other laptops but not my dv6 2670qm.
My iPAD mini has never worked on my laptop.
Any Suggestions?

Hi Super Mario,
Thank you for your quick reply. In the second paragraph of my post, I noted that the iPad mini and cable work with other laptops, both x86 and Apple (tested at home and the Apple store). It works for charging and iTunes on all of the other computers we have tried. Neither of those functions work on the HP dv6, in fact be iPad doesn’t even indicate that there is not enough power or that it is an incompatible port (the error messages referenced in the article). It does nothing at all when plugged into the dv6’s USB ports.
The Apple article you referenced indicates that the USB port must be at a certain power level. Can you confirm the power level for the USB ports on the dv6 Intel 2670qm? It seems like a lot of people have trouble with the USB ports on the dv6 based on the posts. Can you think of any other explanation for in the non-recognition of the iPad mini?
Thanks again.

Imac usb ports disabled and nothing is connected

iMac 27inch Late 2007 USB Ports Disabled Again!
Has happened before and took forever to fix it. Nothing specific fixed it last time and nothing I know was the direct cause. Each time different OS, different location, different year, different cables etc etc.
Now, reset everything, moved everything, changed everything - still nothing. No USB ports work. iMac still has pop up "USB devices disabled..."
Taking into Apple unless someone can tell me what 10 pages of google hasn't - what a bloody stress and waste of time!

Disconnect all peripherals from your computer.
Resetting your Mac's PRAM and NVRAM

Rear USB ports get no power after apple boot screen...

I have an iMac G5 iSight - 2.1GHz with 2GB RAM and a 500GB hard drive... this machine has been stock since the day I bought it... with all updates applied and is in a clean office environment with a UPS backup powering it... so I can rule out dust dirt and grime being an issue here...
Things were working fine on with this machine until a day ago when I turned on the machine and when I got to the login screen the mouse was not working (stayed up in the upper left corner) and no red led light on.
So i tried restarting multiple times and used all three ports on the back of the unit with no luck each time... I them disconnceted all external drives and printers from the unit - also no luck.
Next I tried resetting the PMU and the PRAM with no luck. I did this by powering down the iMac and removing all cords (including power cord) - then held down the power button for 10 seconds... powered back up and held the ALTApple+PR until the machine reset three times.
I find it odd the keyboard works right before the boot screen comes on... but as soon as the boot screen comes up... I can see the power to the mouse cut off...
I know the keyboard and mouse work fine as they work on my Mac Mini with no issues... what the heck is causing this. I canot get into my mac... with the exception of screen sharing from my other mac.. but I need to get the USB power failure problem fixed.
Any other thoughts???
Thanks for any suggestions...

What's odd also is that if I boot into Open Firmware (ALTAPPLE+OF) I am able to see the mouse powered up and the keyboard works fine - I even followed these steps to no avail:
http://support.apple.com/kb/TS1812
Apple if you are listening - please check what the 10.5.6 update is doing.. al of this happened after I updated.... nerve racking considering I work from home... it's killing me...

T500 Adv. minidock usb port fails to power on when docking

When I put my T500 in the dock the USB doesnt always power on .. Anyone experiencing the same problem ?
Regards,
Kasper

Hi kasperxb,
Welcome to the Lenovo forum!
Are you still having the USB problem? If so - is the port that fails to power on, one of those built into the dock, or one on your T500? What USB devices do you have plugged in?
Best regards,
Frank
Results of Your Ideal Business-Class Laptop survey, concluded 2009-07-29.
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Is the iMac really capable of high power use?

My 3 month old iMac is in the shop because of random shutdowns - mostly when I use Adobe Photoshop CS3 (but also when I am just reading email or browsing the internet). The "Apple Tech" informs me that perhaps the software I am using is too much for the iMac (set up with 2GB of memory, 20" model). Is it just me or did I misunderstand the ads and sales folks when I read and was told that this iMac was for me and my 10 megapixel digital camera coupled it photoshop (and the list goes on)?
Yet, Apple support told me to take it in so that it could have its power supply or logic board replace because one of those is possibly the problem.
Anyone else have an iMac behaving like a lemon when you put the pedal to the metal?
I don't have this problem with a 1.5 year old Mac Book running the same exact program.

At work I have 2 computer labs of 2.16GHz iMacs/2GB RAM running CS3 apps daily without any problems. It sounds more like manufacture defect to me.

Which iMac usb port is high power?

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