Wrongle dongle
Pilot fish is doing over-the-phone technical support for a big computer maker and fields a call from an elderly gentleman who can’t log into his PC. Nothing they try is working, so fish has the fellow attach a wired keyboard instead of the wireless one he’s been using. It works, so the problem’s source has been narrowed down.
But the man and his wife really prefer their wireless keyboard and mouse, so fish stays on the line to help them troubleshoot. Wireless USB dongle is in the USB port? Check. OK, try changing USB ports. No help. User says he still has an older wireless keyboard and mouse; should he try them? Absolutely, says fish. But that doesn’t work either.