What can/can't plug into the USB hub on back of 24" ACD?

Hello,
I have a harpertown mac pro 3ghz machine connected to my new 24 inch cinema display. Question, what can I plug in and not plug into the back of the USB hub? How do I know what devices would drain power from the ports? In other words, USB drives - I take it, one can't plug those into the back of the monitor's hub, correct?

The USB ports on the display do provide power (500 mA per port), so any USB device should work.
If you use the aluminum USB keyboard, though, there is a difference between the USB ports on the Mac Pro and those on the display. Normally, the keyboard acts as an unpowered USB hub, so each port can provide only 100 mA. When plugged directly into a Mac Pro USB port, though, the Mac Pro provides extra power to that port, so the keyboard has enough power to provide 500 mA to one of its USB ports. The means the keyboard can be used to charge an iPhone, or use a USB spick that needs more than 100 mA.

Similar Messages

  • What can i plug into the USB port??

    Would it be possible to plug in a D-Link Bluetooth Adaptor into the Airport Express USB port?
    Also can i use a USB hub with the slot, so i can have my printer and BT adaptor plugged in?
    *nathan

    Simple answer - no.
    See AirPort Extreme, AirPort Express: Uses for the USB port
    A Bluetooth adapter of this type must only be plugged into the USB port of a computer.

  • I have a macbook pro4.1 and the sound chip in it failed. My speakers and microphone no longer work. Does anyone know of an external speaker and microphone set that plugs into the USB port so I can continue to use both of these functions?

    I have a macbook pro4.1 and the sound chip in it failed. My speakers and microphone no longer work. Does anyone know of an external speaker and microphone set that plugs into the USB port so I can continue to use both of these functions and not have to pay to have the entire main board replaced. Preferably something under $100.

    I don't think you're likely to find a set of external speakers that come with a microphone and plug directly into a USB port. There are USB audio cards that look like tiny flash drives but have microphone and headphone ports in them, to which you can connect a typical two-plug Windows PC headset with a microphone, or else you can connect external speakers and a stand-alone microphone. Those adapters typically cost under $10. I don't know anything about the quality of sound that can be expected from them.
    I have a Griffin iMic, which is much the same idea but larger, a bit more expensive (retail~$40), and perhaps delivers somewhat better sound quality (I hope so, but I don't know because I've never had occasion to try one of the little ones).
    http://www.google.com/products/catalog?oe=UTF-8&hl=en&client=safari&q=usb+sound+ card&um=1&ie=UTF-8&tbm=shop&cid=9618463009759678039&sa=X&ei=tgQoT5zYOMfZ0QHkiICw Ag&ved=0CHcQ8gIwAQ
    http://compare.ebay.com/like/320779457703?var=lv&ltyp=AllFixedPriceItemTypes&var =sbar

  • After ejecting a disk plugged into the USB port using Finder, I am now getting "The disk was not properly ejected" message.  This didn't used to happen.  How can this be corrected?

    After ejecting a disk plugged into the USB port using Finder, I am now getting "The disk was not properly ejected" message.  This didn't used to happen.  How can this be corrected?

    When you right (control) click on the disk and click eject "disk name", do you pull it immeadiatly or wait a few seconds for it to unmount? Try waiting and see if you get the same message. If you do, when the disk is connected go to applications/utilities/disk utility, after opening DU, select the volume in question from the left side bar and try a permissions repair, you may also run verify disk and see if it comes up with any errors (they will be in red)

  • I want to connect a Windows PC to an existing Airport Extreme router via ethernet connection. Is there any utility required or can I just plug into the router?

    I want to connect a Windows PC to an existing Airport Extreme router via ethernet connection. Is there any utility required or can I just plug into the router? The router is already set up and working with existing iMacs.

    thanks for the info. I found apple utilty software on this windows 7  PC but I guess it is not required for sharing  internet on exisiting apple extreme. Am I correct that I can remove this apple software?

  • My IPHONE will not Sync when plugged into the USB port, although the it makes the sound that it is charging, Itunes does not recognize that it is there, what should I do?

    I have restarted the computer, the IPHONE 4, I have checked for updates, and Have reinstalled Itunes.  The Iphone plugged into the usb makes the noise that its charging but nothing else. It does not sync and ITUNES does not recognize its plugged in.
    Please Assist.

    See also Recover your iTunes library from your iPod or iOS device.
    tt2

  • How do I configure my Airport Extreme to see the printer I have plugged into the USB port?

    How do I configure my Airport Extreme to see the printer I have plugged into the USB port?

    OK. The 6.0 version no longer has a printer configuration that I could find. You might try Printer Sharing in the Sharing preferences.
    I would also check the printer's user manual for help with the setup, and that failing check the manufacturer's website and/or tech support.

  • I have an optical mouse that came with my Mac Pro plugged into the USB port on the keyboard. After a year of working normally, the trackball all of a sudden stopped scrolling down. It scrolls up just fine, but not down. Any thoughts?

    I have an optical mouse that came with my Mac Pro, the only thing plugged into the USB port on the keyboard. After a year of working normally, the trackball all of a sudden stopped scrolling down. It scrolls up just fine, but not down. Any thoughts?

    Well
    I tried all of the suggestions, sort of. I did not have alcohol wipes, but I did take alcohol and pour some ona white paper towel and then rolled the mouse touch ball aroound and that finally cleared up the problem.  Just inverting it on paper did not do the reick, it needed some help with the alcohol.  Of course the probelm is the debris that gets inside and it really needs to come out.
    This is a huge problem for RIM devices users too.

  • I have a MacBook Pro laptop purchased in June 2011, and the superdrive no longer works.  Rather than have it replaced, I'll buy a 3rd party superdrive that plugs into the USB port.  Does it need it's own power source, or will the USB port suffice?

    I have a MacBook Pro laptop purchased in June 2011, and the superdrive no longer works.  Rather than have it replaced, I'll buy a 3rd party superdrive that plugs into the USB port.  Does the external superdrive need it's own power source, or will the USB port provide enough power?

    The Apple external SuperDrive actually exceeds the allowed power draw. Because of this, it is only trouble-free on certain models that accommodate this excess.
    All others require an external Power source.

  • All I can see on my Ipod is the itunes app plugged into the usb.  I have reset it and still not working

    I am getting a black screen on my ipod touch.  I plug it into the ihome or the computer and all it shows it the round itunes and the usb plug in.  I have tried to reset it by pushing the home button with the on/off button and it will show the apple for just a split second and then go back to the itune/usb screen.   What can I do to fix this.

    Connect the iOS device to your computer and restore via iTunes. Place the iOS device in Recovery Mode if necessary to allow the restore.
    If recovery mode does not work try DFU mode.
    How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
    For how to restore:
    iTunes: Restoring iOS software

  • My ipod will not stay connected to my computer.  When first plugged into the usb port, I can see it as a drive.  Within seconds it disappears.  If I look in the devices area, I can see it but it has a yellow triangle with an exclamation point beside it.

    When I connect my ipod to a usb port on my computer, I can see it in my computer as a drive for a few seconds and then it disappears.  It can be seen under devices but as a yellow triangle with an exclamation point in it.  If I run trouble shoot, it states windows is disconnecting this device. 
    I can see it in itunes as a device.  However, this is a brand new computer, running windows 7.  My last one bit the dust in mid use.  I want to save the songs on my ipod and to do that I believe I need to be able to see the files on the ipod.
    Any help would be greatly appreciated.

    Great Troubleshooting on your own so far!. (If you got 2 PC and 2 iPod would be much easier, some of the people in this community has more than 2 of each.)
    Hope you did not connect it to a USB Hub, the sync cable must be plug in directly to a USB2 port at the back of the Desktop Computer.
    If you have a spare Notebook, with iTunes, connect it to the Notebook, to check if the iPod is working or hung.
    Can you iPod run and play songs, when disconnected from the PC? (Sorry, for just asking the obvious)
    Anyway, just hard reset your iPod, so that we can start from scratch
    1. if your iPod is hung, reset it by pressing Menu and Center button for at least 10 secs till the Apple logo, comes on. (this won't delete your songs in the iPod, if they are not corrupted))
    2. Connect it back to your Notebook or Desktop.
    if your iPod screen is dead, try charging the battery by connecting it to another computer. if it doesn't connect to successfully to another computer, it may need servicing.
    Good luck!

  • Charging iPod abroad--can I plug into the USB port of a foreign computer?

    I'm going to Guatemala and will be bringing my iPod touch. I expect that I'll be in internet cafes on a fairly regular basis. Is there any currency conversion problem if I charge my iPod off of the USB port in a foreign computer? Guatemala uses the same currency as the US, but I want to be sure it's safe...
    Thanks!

    USB power output is standardized, you should have no trouble, just be sure not to sync with the machine if it has iTunes or you will remove all your music/videos.

  • Blackberry Desktop SW does not recognize the device is plugged into the USB

    Hi! Hope someone can help!  I have been syncing fine for years.  Then all of a sudden, my BB Desktop software says 'Connect Your Device".. but is is connected via the USB.  I click the link that says Troubleshoot your connection, and verified each one of the items.  I then uninstalled and reinstalled the BB Desktop Software, same issue.  The phone is charging fine and the sound is made each time I plug in and unplug the Bold 9900 to the USB to the computer.  I have tried all the differnt USB ports, and differnet cables.  I use WIndows 7 Professional, SP 1.
    Can anyone help??  Thank you!

    No. Never had this problem.
    What kind of an adapter are you using?  Your Apple supplied charger is multivoltage. All you need is to use a plug that will allow the charger to fit into the UK plug.

  • Why does the mouse 'run' to the lower right side of desktop and freeze when a SmartBoard is plugged into the USB port.  Running 10.8.5.   Sometimes the pointer has a cloud under it but it always freezes.

    I run SmartBoards connected to iMacs running 10.7 and 10.8 throughout my school.  On one of these computers the mouse has recently started freezing the minute a SmartBoard is plugged in to the USB port.  The mouse 'runs' to the bottom right side of the screen, a cloud often is under the pointer, and it is not longer interactive.  You can move the mouse upward a bit with the cloud following some of the time but it does not work.  Once the SmartBoard is unplugged the mouse works normally.  This particular computer worked fine with the SmartBoard until recenlty.  Any solutions or ideas?

    1. Reset the Pram and SMC
    http://support.apple.com/kb/ht3964
    http://support.apple.com/kb/ph14222
    If these don't relate to your computer a quick web search will get you details
    2. Run the Disk Utilty to verify the disk and then repair permissions.

  • Airport Extreme won't show the WD external hard drive I plugged into the USB port.  How do I connect my external hard drive to my network?

    I plugged in my WD external hard drive into my Airport Extreme via the USB port.  The hard drive will not show up in the disk section in the airport utility... How do I hook an external hard drive up to the airport extreme?  I have tried 2 different WD hard drives.  I must be missing something!!!
    Thanks!

    To be recognized by the AirPort for sharing, the WD HDD has to be formatted in either HFS+ (ideal) or FAT32. The easiest way to format the HDD is to use the Disk Utility in OS X.

Maybe you are looking for