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???

Similar Messages

  • Mac pro usb ports won't work when ipod is plugged in

    I just bought a used Mac Pro (2008). 8 cores, 12 meg 0f ram, all of this so I wouldnt be limited as I was with my 4 meg Imac. I go to plug in my ipod, and none of the other ports work, I can't use the mouse or keyboard. Is there any way around this. I had to plug the ipod directly into the tower (the port wouldnt work) This is frustrating, I get this model to be more than capable for what I need, and something like this pops up...always something. If anyone out there has had this experience, and figured out a work around, please help. Thanks

    okay, that doesn't sound usual. Sounds to me like the usb port is drawing too much power. Try doing a repair permission or SMC reset. If you are using it with a USB hub, maybe that needs plugging in to the wall, or maybe it has gone bad. I can't help you a lot, but just a little bit. repairing permissions is through Disk Utility. SMC goes like this:  shut down the Mac pro, unplug the power cord,  wait 15-20 seconds. reattach power cord, wait about 15 seconds, then press power button. you can maybe try resetting the PRAM-shut down Mac, turn on computer, hold down Command, Option,P and R keys before grey screen appears. Hold down until computer restarts again and you hear the 2nd startup sound. Let go of the keys.  You can also check in "About this mac" (more info) to see if there's something wrong with the USB ports themselves.
    Other than that, could be logic board battery. Maybe Archive and install. Sorry, the crystal ball has gone dark. I"m sure someone else can enlighten you more than I can.  I always plugged my ipod directly into my tower via the front USB port...
    John B

  • Mac Pro USB ports and bluetooth not working

    I have a Mac Pro (early 2008) Quad-Core Intel Xeon, 2.8 GHz, 4GB ram, Airport card, Magic Mouse. Suddenly the keyboard and wired/bluetooth Mouse are unavailable, so it is not possible to control the computer. The only way I can use it is by using Screen Sharing from my MacBook Pro - which is obviously pretty useless except for diagnostics! All the USB ports (front and back, as well as those on the Cinema Display - when connected) are dead. System profiler shows no problem with them, but also shows nothing connected. Bluetooth in menu bar shows as "Bluetooth: not available", and in system profiler shows as "No information found".
    I've tried all the usual remedies. Powering off overnight with power cord disconnected, all peripherals disconnected, then booting up again. Holding in the power button for ten seconds when the power cord is disconnected. Obviously I can't reset the pRAM (because the keyboard is not recognised, even before the OS loads). The first couple of times I tried this process, it did bring back the USB ports, even the bluetooth became temporarily available, but soon disappeared again. USB ports died next time I rebooted.
    However, in the last couple of days, the process produces no results. No matter how long I leave it disconnected, USB ports are not working and bluetooth is just not there...
    I've checked for other threads on this topic, but most other people seem to have issues with either front or back USB ports, or even just one or more individual ports. My problems have only been with all ports or none.
    Does anyone have any suggestions to get my MacPro up and running again properly?

    Just waking this thread up again in case anyone has had any other ideas.
    Since last posting, usb became functional again, (came back on a couple of hours after a restart) and as long as I kept the machine alive, usb would stay alive. Bluetooth came back on briefly, but for most of the time was unavailable. System profiler shows no problems and Console does not report any usb related errors as far as I can see.
    After a recent restart, usb disappeared again, and despite numerous restarts and being left on for a couple of days (and subsequently left off for several days) it has not come back. When usb is not working, examining the system profiler (through screen sharing from my macbook) usb shows no errors, but also shows no connected devices. I can charge my ipod nano with any of the usb ports (front or back), so power does not seem to be the issue.
    I can't reset pRAM (because the keyboard is not available at boot), but have reset SMC numerous times. Have tried other keyboards, and mice. No joy.
    I seem to have run out of ideas. Any suggestions?

  • Mac Pro USB port problem

    The front USB ports on my 2010 Mac Pro aren't working. Every time I boot the Mac, I get a message window - twice - saying they were drawing too much power, and have been switched off, even though they're empty.
    I've tried resetting the PRAM, powering off and unplugging everything and removing the battery from the logic board. Nothing has worked. The two front-facing FireWire ports are working, but the USB ports just won't come alive. Does anyone have any further ideas?

    I would run the Apple Hardware Test:
    Checking for a Hardware Problem
    If you suspect a hardware problem, use the Apple Hardware Test application to help
    determine if there’s a problem with one of the Mac Pro components.
    To use Apple Hardware Test:
    1. Disconnect all external devices from your Mac Pro, except the display, keyboard,
    and mouse.
    If you have an Ethernet cable connected, disconnect it.
    2. Restart your Mac Pro while holding down the D key.
    3. When the Apple Hardware Test chooser screen appears, select the language you
    want to use.
    4. Press the Return key or click the right arrow button.
    5. When the Apple Hardware Test main screen appears (after about 45 seconds), follow
    the onscreen instructions.
    6. If Apple Hardware Test detects a problem, it displays an error code. Make a note of the
    error code before pursuing support options. If Apple Hardware Test doesn’t detect a
    hardware failure, the problem may be software related.
    You may also consider replacing the front panel board.

  • Mac Pro USB port can't detect SD card reader.

    My new macpro ( 2014) can't detect SD card reader with all 4 USB port ! I try to test with macbook Pro it's work properly ! What wrong with my USB port ?

    This is too obvious, but neverthelees:
    Have you checked that the card works on another computer?
    Does a different USB or FW device work on the same computer port?
    Is there a card actually in the reader?

  • Mac pro usb ports not working

    Hi I have a dual core intel mac with 3.0 ghz processors 8 gig of ram v1.1 all of the USB ports front & back have failled. The computer boots up into Snow Leopard, 10.6.8 The mouse, keyboard or any other devices using USB ports don't work, I checked with a multimeter on all the USB ports & there is no +5volts between pins 1 & 4 on any of the USB ports. I have check the keyboat & mouse on another mac & they work fine.
    Doy you have any idea what I should do now,
    Kindest Regards,
    Anthony.

    When wacky Hardware probelms strike, reset the System Management Controller (SMC).
    http://support.apple.com/kb/HT3964
    Intel-based Macs: Resetting the System Management Controller (SMC)

  • A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port.  WHen we plugged it into the port on the keyboard, the device works. Why?

    A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port.  When we plugged it into the port on the keyboard, the device works. Why?  Obviously the device is operational.  Could the USB port have burned out from having too much power drawn?  If so, is it reparable?

    It can't draw "too much" power, it can only draw as much as the USB port is able to provide and no more. IIRC, the keyboard port has a lower power output than the iMac's port.
    That being said, yea, it's possible that the port has failed and it can be replaced or if another port works you can use that one. Although if it is still under warranty or covered by Apple Care, then I would take it to an Apple Store or service provider to get the port repaired.

  • 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!)

  • 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

  • Mac Pro USB and FW800 ports not working

    I've been reading tons of forum entries in the Apple Support Community and in other forums.  Nothing seems to answer quite what's going on with my Mac Pro Tower.
    Here are the details and steps taken up to now:
    - I'm running a Mac Pro Tower (MacPro 3,1, 2x 2,8GHz Quad Core, Early 2008 model), currently running OS 10.6.8
    - I moved before the holidays in December and left my computer unplugged for over  month while away. Didn't have any issues before the move.
    - up until the last couple of weeks, I had actually been running on Leopard (yes, I'm a luddite!, please, no teasing )
    - I was trying to update my ipod touch's iOS and kept getting errors preventing it from completing the process. At first I thought it was an ipod app causing the issue after having read a few threads on that topic...
    - Also, on startup, the Mac started searching for a Bluetooth keyboard, of which I don't have, and would not detect my usb keyboard.  I would disconnect and reconnect the keyboard and the majority of the time, the Mac would then recognize my USB keyboard.
    - I decided to upgrade to Snow Leopard, which didn't help with the iPod update. I did not do a clean install.
    - Then I noticed that my USB stick wasn't working and tried it in all the usb ports (except the ones on the keyboard)
    - Also, I had removed and then reinstalled printer and scanner drivers for my All-in-one printer. After this I kept getting constant communication errors between the mac and the printer via the usb port, although I was able to print a test page.
    - I've used Hardware Test once which didn't detect any issue.
    - I reset the SMC
    - I reset the PRAM, and for a few seconds I was able to read from my USB stick, then never again, even after another PRAM reset.
    - I've cleaned the whole inside of the computer and checked for loose cables.  Cables are in so tight it's so hard to loosen them!
    - I now tested all the ports:
         ∞ the 2 front and 3 back USB ports are unresponsive to my usb key and to my VoyagerQ dock
         ∞ the front and back FW800 ports are unresponsive to my VoyagerQ dock
         ∞ However, the keyboard works in any fo the back ports and my USB stick is recorgnized by the USB port of the keyboard.
         ∞ I also plugged in my Logitech webcam into the keyboard and it works there but not in any other port.
         ∞ When I plug in USB powered speakers into any of the ports, they work fine
         ∞ And the FW400 ports are also working fine with my VoyagerQ dock
    - a few times, including once today, my mac restarted by itself.  The times before today, I thought it was because I was sort of moving back the computer in place, but today I was nowhere near the computer.
    So what does this all mean? Should I do a clean install of the Mac OS? Or is it a problem with my Logic Board?
    Any insight please would be helpful.  I had Apple Care and missed the reminder to renew it so I really hoping not to spend more money than necessary.

    Thanks Grant,
    The battery is a start and something inexpensive to replace.
    I did do a PRAM reset (command + option + P + R) and was able to hear the chime 4 times. I tried resetting it a number of times over the past week, as well as yesterday with no success in reviving the USB ports.  But isn't it weird that my USB powered speakers work by plugging them in any USB port (with the mini jack pugged in the back or front earphone plug)?
    I did not use the USB ports on the keyboard until yesterday, so that is not the cause of the other USB and FW800 ports failing. But I'll follow your suggestion and not use them except for the mouse.
    Another weird thing that happened yesterday, I have 16GB of RAM and I spent all day trying to troubleshoot a RAM issue that is magically fixed after leaving the computer on overnight to do an extended Hardware Test. The issue was:
    - Only 8 RAMS were being recognized
    - a red LED light appeared on the top riser
    - first I thought I had isolated the faulty RAM bar, and then a second one
    - Then going pair by pair again, I no longer saw the LED light
    - Put back all 8 bars, only 8 GB of RAM recognized
    - Left computer overnight running Hardware test (said it took almost 3 hours, with no errors)
    - Now all 16 GB are recognized!
    Thanks again for the tips

  • MAC PRO won't boot up power light constantly flashes

    So here is the situation. I left for vacation a week ago my mac pro was turned off and plugged into a UPS. When I came back and tried to power on the computer it turns on but there is no "Chime" but the power light does come on like normal (at first) and then just blinks constantly. The monitor stays completely black.
    Here is what an apple tech had me do:
    Unplug all devices and try powering on with the plug in a wall socket. Unplugging everything from the computer for 15 seconds (SMC reboot?)
    No luck. He wants me to take it to a store... I hate taking my computer to a store and handing it over for an unspecified amount of time...
    Could opening up the comp and manually resetting the SMC or clearing the PRAM work? I asked the tech what more someone at a store could do and he said they would just test the voltage. Do you need a special tool for that because I have a volt meter and I would much rather not take it to a store. If it is the power supply I would rather they send it to me to install.
    Jeremiah

    I wasn't aware PRAM batteries did any charging
    Apple has used rechargeable batteries for volatile storage for some time.
    and just 'held' information in NVRAM and PRAM when needed and there was no power coming in
    I can't see data held in NVRAM/PRAM doing something like keeping time without some power. One can't assume a permanent Internet connection to update it when the system is turned on now can we?
    I assume it is on a 1000VA UPS that has good battery and fully charged too, and didn't discharge during the vacation
    If the UPS was turned off it's as good as being totally unplugged so it may well have still been at 100% upon return. There's no power delivery when the UPS is off remember.

  • XP thinks my Mac Pro USB 2.0 ports are 1.0

    For some reason, when my computer starts up in XP, an alert comes up and warns me that my devices should be using USB 2.0 to take advantage of the best speed available. However the new Pac Pros have 5 USB ports which are ALL USB 2.0.
    Any clue why this might be?

    Thanks for your suggestions, but I need to clarify something.
    When I connect my USB 2.0 Flash drive to the top of the two front USB ports, I get, "This USB device can perform faster if you connect it to a Hi-Speed USB 2.0 Host Controller.  For a list of avaliable ports, click here."  When I click there, I get "VIA USB 2.0 Enhanced Host" and inside of that "USB Root Hub (6 ports)" and inside of that "Unused Port" six times.  The flash drive is recognized as drive G: and the transfer rate is very slow.
    When I connect my USB 2.0 Flash drive to the bottom of the two front USB ports, I get, "USB Devce Not Recognized.  One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it."  The flash drive is not recognized.
    When I connect my USB 2.0 Flash drive to either of the two USB ports in the back that are connected directly to the mainboard, or to either of the two USB ports in the back that are connected to a card in a PCI slot, I get no messages and the flash drive is recognized as drive G: and the transfer rate is exactly the same as when it is attached to either of the front USB ports.

  • Mac Pro USB Failure.

    Hello people!
    Several months ago, i started to notice some problems with USB devices and built-in USB Ports. The problem is started with these symptomes:
    After some working, all USB internal USB ports stop to giving power to usb devices. Only works that had power from another powered hubs like in my Apple Cinema Display.
    It can causes at any time, but more expectedly at adding some USB devices (nevermind what, even flash card) to built-in ports of a Mac Pro.
    And here is the logs:
    Dec 30 18:53:24 Viktors-Mac-Pro kernel[0]: 0            0 AppleUSBCDC: start - initDevice failed
    Dec 30 18:55:34 Viktors-Mac-Pro kernel[0]: IOSurface: buffer allocation size is zero
    Dec 30 19:07:36 Viktors-Mac-Pro kernel[0]: USBF: 1003.270 [0xd45b700] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 3 of Hub at 0xfd000000)
    Dec 30 19:07:36 Viktors-Mac-Pro kernel[0]: USBF: 1003.443 AppleUSBHubPort[0xfedfe00]::FatalError - Port 1 of Hub at 0xfd300000 reported error 0xe00002ed while doing setting port power
    Dec 30 19:07:36 Viktors-Mac-Pro kernel[0]: USBF: 1003.544 AppleUSBHubPort[0x1015ec00]::FatalError - Port 2 of Hub at 0xfd300000 reported error 0xe00002ed while doing setting port power
    Dec 30 19:07:36 Viktors-Mac-Pro kernel[0]: USBF: 1003.579 AppleUSBHubPort[0xfedf700]::FatalError - Port 3 of Hub at 0xfd300000 reported error 0xe00002c0 while doing setting port power
    Dec 30 19:07:51 Viktors-Mac-Pro kernel[0]: Keyboard Hub::terminate(kIOServiceSynchronous) timeout
    Dec 30 19:07:54 Viktors-Mac-Pro kernel[0]: USBF: 1021.269 [0xd45b700] The IOUSBFamily was not able to enumerate a device.
    Dec 30 19:09:58 Viktors-Mac-Pro kernel[0]: USBF: 1145.583 [0xd45b700] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 3 of Hub at 0xfd000000)
    Dec 30 19:10:01 Viktors-Mac-Pro kernel[0]: USBF: 1148.583 [0xd45b700] The IOUSBFamily was not able to enumerate a device.
    But today this problem fully transform to another way. Now, USB devices are all works normal during work in OS which is Mac OS X 10.7.2 Server. But before it, OS booted two times. First time is a Cold Start, which is loooong and sloow. Especially, my OS booted from a RAID-0 of a two SSD drives (during normal start it takes 2 seconds to boot). Then still during boot procces, all USB devices turned off, and Mac Pro self-rebooted automatically. Second time he booted is normal fast startup without a problem.
    These i found using dmesg:
    [KLogClient]start(0x12a26f80)
    [KLog]neUserClient() client = 0
    [KLog]Closing: 0xfe69c00
    [KLog]userclient ref: 0 0xfe69c00
    [KLog]userclient ref: 1 0x10236000
    [KLog]userclient ref: 2 0x1022d900
    [KLog]Closing: 0x10236000
    [KLog]userclient ref: 0 0x10236000
    [KLog]userclient ref: 1 0x1022d900
               0            0 AppleUSBCDC: start - initDevice failed
               0            0 AppleUSBCDC: start - initDevice failed
               0            0 AppleUSBCDC: start - initDevice failed
    [KLog]Closing: 0x1022d900
    [KLog]userclient ref: 0 0x1022d900
    Tried to do some testing. Booting to my second OS (Mac OS X 10.4.11 Server) makes the same effect during cold start. And what strange, in boot logs didn't any mention about what causes to reboot. It also does this double boot even if i turn out all USB devices from ports. Resetting SMC and PRAM, clearing and rebuilding Kernel Cache does nothing. Reported to Appel Bug reports... Can't understand what happens, and what to do... Everything was good before the 10.6.7 update. And it get much worse in Lion.
    mac: Mac Pro 2,1 (2007)

    Hello!
    I would start by checking which hub is pointed by the mentionned address (0xfd300000).
    Do you have Apple Developer Tools installed? If yes, open “IORegistryExplorer” or “USB Prober” and check which hub is referenced. Then, you could start inspecting its properties.
    If you don't have them… well, install them

  • MAC PRO USB Problem - Traced to bad Apple Keyboard Extension Cable

    I found a fix to a problem synching to my itunes Library on my early 2008 MAC PRO.   The Apple supplied USB extension cable for the keyboard was defective.
    The symptoms were hangs in itunes and finder synching to iPods and transferring data to USB hard drives. The iPods and hard drives never lost power and no errors/log entries were made. The transfers simply stalled and would not continue. itunes and finder would hang until the drive or ipod was removed. These devices were installed directly to USB ports on the MAC PRO. No other USB devices were connected except for the aluminum keyboard and mighty mouse; the mouse was connected to the keyboard. The keyboard was connected using the USB extension cable that shipped with the MAC PRO.
    Hardware diagnostics were all clear. The keyboard and mouse never had any connection problems. Only itunes syncs and hard drive copies would fail; these would occur at random times. I had an open ticket with Apple to have the logic board replaced as it was diagnosed to be a hardware/USB problem.
    Removal or replacement of the extension cable on the keyboard (which was connected to a different USB port and NOT in the USB chain with the ipod and hard drives) permanently fixed the problem. I cancelled the Apple HW replacement.
    I have noted several posts with others having problems with USB ports and devices. I wonder if Apple has an unknown problem with bad keyboard extension cables.

    I think you may be onto something there. I'm just a few weeks into my second Mac Pro and again it's having the same USB problems which led Apple to give me a replacement machine previously. I went through several weeks of considerable testing with Apple Engineers prior to that - an Apple Care application to collect data from my machine, Apple Developer USB prober and two clean installs. The latest machine initially showed no sign of the problem then it started again - 2 iPods "can not be read or written to" part way through sync, Aperture quitting importing from USB SD card reader, USB drives dismounting etc. So I pulled out the Aluminium keyboard and, lo and behold, the iPods managed to get all the way through synching without errors. I really like the alu keyboard so it's a huge shame that it might be the cause of all my problems so far - and the Mac Pro is otherwise a beautiful computer.
    But is this really a hardware problem of the internal USB cards and power management or supply?

  • New Mac Pro USB Problems!

    It seems the new Mac Pro cannot recognize certain devices.  Such as my Access Virus Ti synthesizer-  users cannot get the Mac to recognize the USB connection from the Virus.  Please help.  I'm losing my mind after 7 hours trying to figure it out and the only indication is that the USB ports on the new mac are possibly incompatible...  Please tell me I can still use my $3000 instrument with my new $4500 mac pro which i just bought SPECIFICALLY to use with this VIrus Ti synthesizer!
    Link to Virus Ti user forums showing other people with the same problemhttp://www.virus.info/forum/index.php/Thread/5522-MacPro-trashcan-and-TI-Anyone- got-it-working/?postID=28004&highlight=trash%2Bcan#post28004

    From what you said it appears that the synthesizer is not compatible. That would be a problem for the synthesizer manufacturer to resolve.

Maybe you are looking for