Thanks a lot for that post !
I had to bear that awful beeping noise for months, and couldn't work at
night to not disturb the neighbours.
I can't understand how come the people who designed the TK-400 at trendnet
could not imagine a "disable beep" keystroke... did they assume their
customers are fond of irritating repetitive noises ?
Anyway, thanks to your tutorial, I was able to force my kvm to shut up.