Port not enough?

Is the port on my macbook not enough to run a portable external drive? it came with a power supply, but says it is not needed. Should I use it?

Kane513 wrote:
Use the power supply if it is plugged into a HUB or external keyboard. If it is plugged directly in your macbook, there should be no need for it.
Not always. Some USB devices are a little bit out of spec and require more power than a standard USB port is capable of delivering. That's why some USB drives come with Y cables with a power only plug and/or with an external power supply port.
I've got a Simpletech drive that needs both plugs in the Y-cable for any of my Mac notebooks to mount or even show up in System Profiler. I don't have an external power supply to try out the power port.

Similar Messages

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????

Not enough Ethernet ports

Airport Extreme only provides three Ethernet LAN ports, which is not enough. Is it possible to daisychain an Airport Extreme to another Airport Extreme? If so, how?
Thanks.

I assume that an Ethernet "hub" is the same thing as an Ethernet "switch"?
No, that is not the case. A hub splits up or divides the available bandwidth among connected devices. So, if you have 4 devices connected, each device would receive 1/4 of the available bandwidth.
A switch delivers full bandwidth to each connected device.....much better performance. For that reason, a switch was traditionally quite a bit more expensive that a hub. Luckily, that is not the case any longer. For a $10-15 dollar premium, you can get a Gigabit Ethernet switch, instead of a hub.
am I also correct that in order to get Gigabit Ethernet from the Extreme and/or the hub (or switch), I will first have to be sure that my modem isoutputting via Gigabit Ethernet?
I doubt that you can find a Gigiabit Ethernet modem. Even if you could, your signal is only going to be as "fast" as the plan that your provider will allow. Typically, that might be 20 Mbps.......while Gigabit is 1,000 Mbps.
The advantage to having Gigabit speeds on your "local" or "private" network is that file transfers or copies between devices will occur much more quickly.
Your Internet connection will never be any faster than your plan allows.

RMI firewall issue - opening port 1099 is not enough

Hello,
We have a distributed java desktop app that uses RMI with callbacks to communicate amongst the clients. It all works really well at our dev site and at 2 trial sites.
We are about to deploy out to more customer sites - so I have been doing more testing with firewalls etc and discovered some issues. Our customers are small businesses and typically have between 1 and 10 desktop clients that connect to the server via RMI. These customers are "very NOT technical", so we need to give them set-and-forget firewalls etc.
This is all on a LAN, with RMI using port 1099. On the firewalls (of the various PCs) we open ports 1099 (RMI) and 5432 (for the Postgres DB).
Also, I was using "CurrPorts" and "SmartSniff" to monitor the traffic at each PC - so I had a reasonable view of proceedings.
Basically, opening port 1099 on the server is necessary, but it is NOT ENOUGH. The RMI moves off to ports other than 1099, and the server firewall does not allow the connection.
Procedure ...
(1) start the "server" app - which starts the RMI registry - the "localhost" desktop app also starts and it works well to both the database and the RMI.
(2) start another client - it connects to the DB Server, but NOT the RMI server.
(3) open the server firewall to all traffic for a few seconds - then the client connects successfully.
From CurrPort logging I could watch the RMI comms progress over those first few minutes ...
Initially the comms do include port 1099 on the initial call to the server, but there after there are always 2 or 3 "channels" open, but not to 1099.
I notice that the Postgres DB keeps using port 5432 for all of its active channels - so it does not have the same firewall issue.
After we have opened the firewall for a few seconds - to enable the link - then we can turn the client on and off and the client re-connects without issue - so it would seem to be only an issue with the initial connection.
I am sure that this is all completely standard and correct RMI behavior.
QUESTIONS:
1. Can RMI be "forced" to always use port 1099 for connections, and not move to other ports? (like the database uses 5432)
2. Are there any suggestions for getting around this seemingly standard RMI behaviour?
Other comments ...
The firewall lets me open individual ports (say 1099) - BUT I can not justify opening ALL ports.
The firewall lets me open all ports to an application, say "C:\Program Files\Java\jre6\bin\java.exe", but that app will occasionally change at a customer's site as they will update their java version and suddenly our app will stop working.
Any guidance is appreciated.
Many Thanks,
-Damian

1. Can RMI be "forced" to always use port 1099 for connectionsYes. Export all your servers on the same port. See UnicastRemoteObject constructor that takes an int, or UnicastRemoteObject.exportObject(int). If the RMI Registry is a separate process you can't re-use 1099 for this purpose, but see below.
2. Are there any suggestions for getting around this seemingly standard RMI behaviour?Yes. Start the RMI Registry in the same JVM as the code, then you only need to use 1099 for everything.
If you are using server socket factories, make sure they have an equals() method, or use the same instance for all remote objects.

When I plug in external hard drive to airport express it tells me not enough power for the usb port. I have the airport express plugged in to power

Airport express tells me not enough power to usb port for hard drive.
I do have power to Airport express plugged in.

The AirPort Express will not support a hard drive....only a printer.
If you need to connect a hard drive, you need an AirPort Extreme, not an AirPort Express.

Not enough memory error when disconnecting device on a virtual com port

I maintain a large application that collects data from many data source channels (using coustom hardware read thru a conventional COM port) and I am adding a GPS data source on a USB port using a virtual COM port driver. The application runs 24/7/365 and works well including the GPS data, if undisturbed. However, the application needs to tolerate a physical disconnect and reconnect of the GPS device without user intervention. When I disconnect the GPS, the application becomes unresponsive most of the time (the mouse responds and other programs that are open on the desktop work fine). I abstracted the serial code and made a separate vi (below) for testing. When I disconnect the GPS from the COM port, I get a "Not enough memory to complete this operation" message 9 out of 10 times and the vi is unresponsive until I clear the error message (the tenth time it continues working). I built the vi this way to collect data continuously. I suspect that this is the problem with the full app but I don't see the Not enough memory message there and therefore the full app does not respond and must be terminated via Task Manager. The full app runs full screen mode.
The LV app runs on Windows XP and LabView 7.0 (the client doesn't want to upgrade).
I have tried probing the error message lines at all points in the vi but they don't show anything when the 'Not enough memory' message occurs (they show the expected device not found error after clearing the error message).
Any suggestions would be greatly appreciated,
Mel
Still learning LV......
Please post any code suggestions as graphics as I don't have access to any version of LabView newer than 7.0.
Attachments:
SerialPortRead.png ‏22 KB

Jeff·Þ·Bohrer wrote:
First, there likley WAS human intervention that caused the GPS device to be removed. That wont happen when you lock the device inside a cabinet with the rest of the test system. Physical access control first! If someone goes and mucks with your experiment setup while its running, that's a "poor Labratory procedure" not a "new software requirement"
I think he was meaning to say without user intervention on the software side.
I have seen odd behavior if you disconnect from a com port whilst LV still has the port open. There are a couple things I myself woud try, being the experimenting type that I am. Perhaps setting up a com port check to see if it has a valid connection before polling for data. If not then a blank case or some other generic code.
The issue with this would be if it became disconnected while LV was polling data. Hard to get around this condition. Is there a way that the cause of the of the connect/disconnect (whether human or otherwise) could be set up so that a signal can be sent to the controlling system (pre-disconnect and post-connect) to trigger an event to handle the software side? A simple signal switch or something. Just thinking out loud. Withoug knowing all the particulars, it's hard to make detailed recommendations.
Doug
"My only wish is that I am capable of learning each and every day until my last breath."

U3011t - Not enough power to USB ports

We are working with a U3011t and before this past Friday all the ports on the monitor worked. After doing re-imaging the computer, I am now receiving an error message that states there is not enough power to supply the USB ports. Any Ideas why this is?

The monitor USB hub is simply a receiver when the USB upstream cable is connected from the bottom of the monitor to a USB port on the computer.
The monitor USB hub should appear in the Device Manager. When I connected the U3011 USB upstream cable to my Alienware M18x-R1 blue USB 3.0 port, the Device Manager- Universal Serial Bus controllers added =
Renesas Electronics USB 2.0 Hub
Renesas Electronics USB 2.0 Hub
USB Mass Storage Device
Reconnect the monitor USB upstream cable to the monitor port. Then, connect the other end of our monitor USB upstream cable to every computer USB port and re-test. Also, test the monitor on another computer. If available, test another USB upstream cable. The ones from any printer will work.

Not enough USB Ports for charging ipod ?

not enough USB Ports for charging ipod ?

If all your ports are in use, try buying a USB hub, they are inexpensive and will give you several more ports. Google for them.

3 lan ports is not enough

I intend to buy an AirPort extreme, but 3 ports lan is not enough. Can i use a any specificatios?
Another question: my houve is big and i want to extend the wifi. Can i extend win another AP extreme by ethernet, so i cant lose sinal strengh?

but 3 ports lan is not enough. Can i use a any specificatios?
You can add an Ethernet switch if you need more connections. They come in 5-port, 8-port, 16-port, etc versions.
Something like this, for example:
http://www.bestbuy.com/site/Networking/Hubs-Switches/abcat0503012.c?id=abcat0503 012
my houve is big and i want to extend the wifi. Can i extend win another AP extreme by ethernet, so i cant lose sinal strengh?
Yes. Apple has instructions to do this here:
http://support.apple.com/kb/HT4259

HT1535 When I plug my ipad into the computer to sync a message pops up saying it can not sync because there is not enough memory in the itunes library. Do I need to increase the memory in my itunes library and how?

When I plug my ipad into the computer to sync a message pops up saying that the ipad can not sync because there is not enough memory on the itunes library. Do I need to increase the itunes library memory and how do I do this, or do I just need to trasnfer things out of itunes? Thanks.

Try
iOS: Device not recognized in iTunes for Windows
I would start with
Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
or
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
Before you reinstall the Apple software, also remove iCloud vi Control Panel Remove programs. The reinstall the Apple programs
New cable and different USB port?
Runs this and see if the results help with determine the cause
iTunes for Windows: Device Sync Tests
Try on another computer to help determine if computer or iPod problem

Clean Install G4 Dual 1 GHz-Not enough Disk Space Error? -SLOW USB copies

HELP puhleeeeze!
This seems to be an issue on various sites with no one being able to figure out what is the cause and a solution. One person stated his problem went away with a fullwipe and clean-reinstall of everything. But this is what I did already.
What is the reason for the "Not Enough Disk Space" error message when both my hard drives have gigs of space available. If I had hair I'd be pulling it out by now! When trying to copy a file to my 2 internal hard drives that have a lot of space available, but only by the USB port?!!
I have a Power Mac G4 Mirrored Door (MDD) Dual 1 GHz with a clean install of 10.5.8 from the Original Mac OS X Leopard DVD. Both internal hard drives are 60GB and 100GB. The hard drives were wiped clean with Disc Utilities and reformatted to Mac OS Extended (Journaled). The Power Mac only has the OS and a few music apps installed. Easily over 30 GB of space left on the the main G4 interal hard drive and about 75 GB on the other internal hard drive.
The error seems to only happen when I connect a USB flash drive to the USB port. I tried to copy a 50MB update to the desktop-"Not Enough Disk Space" error message happened.
I know that the G4 MDD Power Macs only have USB 1.0. Is this a USB 2.0 issue? Another issue is that it has very slow USB speed (dramtically slower than normal USB 1.0 copying of files. And this is only when it is successful. Is it a USB format issue? I know I couldn't get an external USB 2.0 drive to mount on the Power Mac at all. Disc Utilities could see it but it still would not mount. I have a friend who has an older G4 single processor Mac that doesn't experience these issues with its USB 1.0 ports.
Now here's the kicker:
If I put in a CD disc in the DVD/RW drive, it copies with no problems to either hard drive. If I connect to the Power Mac via the ethernet network, files can copy with no problems. But any USB connection - I get a the "Not Enough Disk Space" error message. I know this is an old mac... but it's never been problematic until this latest wipe and update to Leopard 10.5.8.
Is there a solution to this? Any and all help, feedback, comments, thoughts are greatly appreciated in advance!!!

Hello everyone,
Ok, I did the ultimate task. I erased the hard drives, AGAIN. Just to start fresh from scratch. Hard drives were erased. Did a new install of Mac OS 10.5. And all was well. I could copy with no problems. I gave the computer to my friend and all was good for a couple of days and then the issue came back again. He couldn't copy anything to his internal hard drives and we received the "Not enough disk space" error message! I was baffled. A complete hard drive erase 2 times, 2 fresh Mac OS 10.5 installs and it works for a few days and then coping to HD we got the same **** problem again! THEN - I remembered that the PRAM battery was dead on this G4 Mirrored-Door Dual 1GHz PowerMac. I had recommended that he get a new battery, because this computer would always have the incorrect date and time after every restart. So with recalling this, I had him reset the PRAM by holding down the CMD+OPT+P+R keys after a restart (start-up Chime). I had him hold the keys for at least 3 start-up-chimes. Soon as the G4 Power Mac started up everything was fine again. He was able to copy files to his hard drives again with the "Not enough disk space" error message.
So everyone! Try zapping your PRAM (resetting the PRAM) and see if this solves your problem. I told my friend to get a new PRAM battery to replace the old one that is completely dead. I have not heard back from him. I will ask him again if the problem has come back.
If that fails: My only other solution would be to consider that it is possible that Mac OS 10.5 has a conflict or issue with the G4 Processors and maybe it is safer to install Mac OS 10.3 or 10.4. Because this problem only has occured after installing Mac OS 10.5, the highest version of the Mac OS the Dual 1GHz Mirrored-Door G4 can be installed.
Cheers,
B

The iPhone could not be restored. There is not enough memory available.

Hi guys,
you all seem the be fairly acquainted with all possible iPhone problems. I was searching this forum for an answer to my problem. iTunes won't restore my iPhone because of an error mentioned in the title of this topic - The iPhone could not be restored. There is not enough memory available. I haven't found anything on the net that I haven't tried yet.
Am using Windows XP, iTunes 7.4.3 and the iPhone used to be on the firmware 1.0.2. I was trying to do the restore but it gave me that error message. I tryed uninstalling everything with WinASO registry cleaner, iTunes, apple device thing(or whatever), installed it 3 times, tried to force the previous firmware with Shift+restore, but nothing. I also tried to switch USB ports. I followed the instruction on how to remove iTunes exactly like it was described in another thread - no success.
Is there any help you can maybe provide, but don't tell me to go/send it to an Apple Store, since I live in Europe, where there is no official iPhone yet.
PLease help

iohen wrote:
Hi,
is there a newer version of iTunes than 7.4.3, which I am already using ?
I don't think so.
And no, the iPhone has not been hacked before, I was using it like iPod, internet browser and stuff. But no calls.
My version of iTunes say 7.4.3.1.
I assume that by saying that your iPhone has not been hacked before means "it has never been hacked."
Are you paying AT&T for monthly service?
I would still try to download a fresh copy of iTunes if possible.
If it does not work, I think that you need to take the iPhone back to the Apple Store or call AppleCare for assistance. The store, and AppleCare, has a number of software tools to potentially diagnose the problems you are encountering.

Not enough FireWire Power?

Hello,
on my new MPP17 C2D I noticed a dramatic change in the behaviourof the FireWire ports. It seems that less power is provided over both FireWire ports than on other/older MacBooks.
Example: I have an external WiebeTech FireWire hard drive that works without an external power supply on all older PowerBooks and even on my MacBook CD. It does not work on my brand new MBP17 C2D. It tries to power up the hard drive for 1 second or so, then stops, then tries again etc.
Is ist true that the FireWire specs on the MBP17 C2D have changed, or is someting wrong wit my MacBook?
Any help is greatly appreciated.
Leo
MBP17 C2D Mac OS X (10.4.8) 3GB/200GB

Howdy!
I'm looking at the same possible problem. I have not purchased a bus powered external hard drive, yet. I have MBP 17 core duo, not the new core 2 duo.
I've looked at http://www.wiebetech.com/products/ComboGB.php
AC adapter optional
Most FireWire and USB ports provide enough juice to power ComboGB, so most users prefer to use ComboGB without an AC adapter for maximum portability. For users who prefer an AC adapter or who must use one with their computer, an AC adapter is available separately.
You will need an AC adapter (or use the included USB power cable) if the port you are plugging into does not provide enough power for ComboGB. This includes all 4 pin FireWire hosts (such as Sony iLink which provides no power at all) and some USB ports.
In most situations, the provided USB power cable can power the drive and pass data at the same time. Alternately, the USB power cable can be used for power only so you may use the USB cable for power and still use a FireWire cable for data.
For yet another configuration option, WiebeTech's Cable-32 is a smaller USB power cable (with no USB pass through) and is an optional power cable for ComboGB.
This setup, with USB power and Firewire data transfer, is interesting. But my research has not 100% comfirmed this option. However, it seems that the external hard drive needs to be a Hitachi drive.
http://www.barefeats.com/mbcd7.html
ALTERNATE STORAGE EXPANSION OPTIONS
If you want to further expand storage on your MacBook Pro, a cool way to do it is with a bus powered FireWire 800 enclosure with a SATA notebook drive inside. (If you go pure SATA enclosure or use the USB 2 port, you'll have to have an AC adapter.) Check with Wiebetech, TransIntl, and OWC for bus powered FW800 notebook enclosures that accept SATA notebook drives.
I wanted to bring this to your attention and I look forward to your comments.
Mark
mbp 17 Mac OS X (10.4.8)

ICHAT ERROR - Not enough bandwidth.....

I have the latest MINIMAC with ISIGHT. I can use ICHAT perfect with one of my friends who has the same computer. So this means my computer is fine and my bandwidth is enough. Then i recently bought another MINIMAC for my father. We tried connecting in two diffrenent locations and it did not work. The camera works and we are able to invite eachother to a video chat but it keeps giving a message that there is not enough bandwidth. I am quite sure that we both have enough bandwidth. I tested my computer from my side and i have a download speed of about 1961 kbps and a upload speed of 1245 kbps. In Belgium i have used my computer in the same location as my father and i can connect to my other friend. I have had the same error message with another friend in Belgium.
Another problem that i am having is with ONE friend he can see me, invite me and we can videochat. From my side i never see him as available and so i can not invite him since he seems ofline. Viceversa it works.

Thanks Ralph. I will try to find out something more from Fastweb. The other friend of mine who i have video chatted with in Italy is using TIM-It the Italian
telecom provider service for internet. With him it works except that he can invite me and not vice versa. I also used a French provider in France (with a french provider when i was there with my other buddy in Italy (who also uses fastweb)and that worked fine. But Then my father tried to connect with me from France to me in Italy and that gave the bandwidth problem. So my conclusions is that the problem is sporadic. Strange. I got my ICHAT name when registering with Mac but then never renewed the service after the 1 month trial. Could that cause the unstability? Or can i change my ISP port 5060? I'll look around a bit more for answers? Thanks anyway.
Jacob

The "not enough storage" window wont close when i press close and my phone also wont reset because my lock button doesnt work. what do i do? just let the battery drain then turn it on?

the "not enough storage" window wont close when i press close and it wont reset because my lock button is broken. what do i do?

Battery does not appear to charge
Important: iPod touch cannot be charged with a FireWire-based power source.
Verify that the power source being used is working properly.
If connecting to a computer's USB port, verify it is a high-powered USB 2.0 port. Note: The USB ports on most keyboards don't provide enough power, so if you're connecting iPod touch to a keyboard, make sure it has a high-powered USB 2.0 port.
Verify the computer is turned on and not in sleep or standby mode. If iPod touch is connected to a computer that's not turned on or is in sleep or standby mode, the iPod touch battery may drain.
Try another USB port.
Try charging from a USB charger if available.
If that does not help, try another USB cable if available.
Learn more about charging the battery.
The Home button isn't working
Put the iPod Touch to sleep.
Wait a couple of seconds.
Press the Home button.
iPod Touch should wake up.
If iPod Touch does not wake up, then iPod Touch should be serviced.
Resources for Service
http://support.apple.com/kb/he57
https://selfsolve.apple.com

Port not enough?

Similar Messages

Maybe you are looking for