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User profile for user: hwhuyler
hwhuyler Author
User level: Level 1
8 points

imac 2014 21 inch with Catalina doesn

imac 2014 21 inch with Catalina doesn't recognize wired keyboard and wired mouse. I changed USB ports, still doesn't work.

iMac Line (2012 and Later)

Posted on Jan 5, 2020 11:29 AM

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User profile for user: D.I. Johnson
D.I. Johnson
User level: Level 7
23,393 points

Posted on Jan 5, 2020 11:52 AM

Try again with a keyboard and mouse that are known to work otherwise.


Here's an Apple Support document with some keyboard troubleshooting tips.


https://support.apple.com/en-us/HT204540#usb


Maybe there's some help there.


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User profile for user: BDAqua
BDAqua
User level: Level 10
244,943 points

Jan 5, 2020 12:12 PM in response to hwhuyler

If your Firewire or USB isn't recognizing any device.  A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:

1. Shut the machine down.

2. UNPLUG the power lead to the computer and any firewire/USB drive or devices.

3. leave it for 10 minutes.

4. Connect back up and reboot. 

http://www.macmaps.com/firewirebug2.html


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imac 2014 21 inch with Catalina doesn

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