Wired keyboard randomly losing communication with iMac

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I have a lab of iMacs with wired keyboards and the keyboards randomly lose communiation with the iMacs.
 

pigoo3

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Your Mac's Specs
2017 15" MBP, 16gig ram, 1TB SSD, OS 10.15
Are you talking one keyboard or multiple? I would say the problem is probably a bad cable/cables coming from the keyboard(s). ESPECIALLY in a computer lab where the hardware can really get abused by users.

- Nick
 
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Your Mac's Specs
Silver M1 iMac 512/16/8/8 macOS 11.6
And make sure keyboard is plugged directly into the iMac, not a hub.
 

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