keyboard not recognised

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keyboard not recognised

I have new thunderbolt screen and am connecting to a mid 2013 mba. I have a wired keyboard connected to the screen but the keyboard is never detected on startup. I need to disconnect and reconnect it, then all works fine. Any solutions, this is not a physical usb connection issue?

Posted on Oct 13, 2013 1:56 PM

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Answer 1

mario49

Community Specialist

Oct 15, 2013 9:38 AM in response to Johnash

Hello Johnash,

Thanks for using Apple Support Communities.

For more information on this, take a look at:

Apple Computers and Displays: Powering peripherals through USB

http://support.apple.com/kb/HT4049

displays can provide up to 1100 mA at 5 V through the port to which the Apple peripheral or device is connected. This power is available under certain conditions:

If your Apple computer or display is powered off, no power will be provided.

Troubleshooting
If you have a peripheral that is acting unexpectedly—such as not turning on or not being recognized by the computer—the peripheral may require more power than is available. If you have a USB peripheral try one of these options:

Use a USB hub that comes with a power adapter.
Check that the peripheral offers the ability to connect to more than one USB port at once.
Find out if the peripheral comes with a power adapter.
If you cannot confirm your device's use with a hub, connect the device directly to the Apple computer.

Best of luck,

Mario

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