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  1. #1
    USB keyboard not always working

    Member Since
    Feb 04, 2008
    Posts
    256
    USB keyboard not always working
    At home I have a D link USB hub that my mouse, printer, keyboard, USB hard drive etc.. is plugged in to.

    Sometimes when i get home and plug my macbook in to it the keyboard will not work. this seems odd as the mouse and all the other things work.

    Any help please?

  2. #2
    USB keyboard not always working
    mac57's Avatar
    Member Since
    Apr 29, 2006
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    iMac 27" 3.4 GHz, 256 GB SSD, 2 TB HDD, 8 GB RAM
    I have the same problem from time to time. I find that simply unplugging and replugging the USB keyboard and/or mouse resolves the issue. I *think* that this is caused by an overloaded USB hub in my case. Is there any chance that this could be your case as well?

    I have just gone out and purchased a new powered Belkin USB hub and so far, the problem has gone away. I have only had the hub for two days now however, so it is too early to say for sure.
    My Macs: iMac 27" 3.4 GHz, Mac Pro 3.2 GHz, PowerMac G5 Quad 2.5 GHz, G4 Cube with 1.2 GHz Upgrade
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  3. #3
    USB keyboard not always working
    cwa107's Avatar
    Member Since
    Dec 20, 2006
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    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Does the hub have an optional power adapter? If so, do you use it? Sometimes non-powered USB hubs can be flakey. If you use the power brick with it, or purchase one that does come with a power adapter, you'll find that things are much more stable.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  4. #4
    USB keyboard not always working

    Member Since
    Feb 04, 2008
    Posts
    256
    it is a 7 port Mains powered D-link hub with 4/7 ports in use

  5. #5
    USB keyboard not always working
    EORI's Avatar
    Member Since
    Dec 08, 2007
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    L.A.
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    Specs:
    24" iMac 2.4Ghz, 4GB RAM/320GB HD; BlackBook 2.4Ghz, 2GB RAM/250GB HD
    I have that exact USB hub by D-Link, and have had very good luck with it when connected to my iMac. It was less predictable when I had it connected to my PC. I've also got a Belkin powered USB hub that my kids use with their PC, and that has also been hit-or-miss.

    My advice, particularly for input devices, is to attach them directly to the computer USB port, leaving other less critical devices for connection via the hub.
    Happy to be back to a Mac

  6. #6
    USB keyboard not always working
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
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    Specs:
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    Rule One is plug keyboards directly into your computer and NOT to a hub, powered or otherwise. Then plug the mouse into the keyboard.

  7. #7
    USB keyboard not always working
    cwa107's Avatar
    Member Since
    Dec 20, 2006
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    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Quote Originally Posted by harryb2448 View Post
    Rule One is plug keyboards directly into your computer and NOT to a hub, powered or otherwise. Then plug the mouse into the keyboard.
    Where can I read the rest of the rules?
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  8. #8
    USB keyboard not always working
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    20,000
    Specs:
    iMac i5 2.7GHz, 16GB memory, OS 10.10.5
    As Mr Deming's quote says you gotta know the right question!

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