Invalid USB-A male to USB-A male cables are also commonly used on low cost KVM switches.

The one I got from Amazon has two of them - one for each computer, then the other end of each cable connects to the switch. The switch has its own micro-USB power supply but it is optional, so the cables must pass power

I read, many years ago when people were changing them to say “ZOMBIES AHEAD”, that the default password is the two digit state code followed by DOT.

E.g., for signs operated by the Washington State Department of Transportation it is simply “WADOT”