Mouse does not work

[Karel Lucas]

Hi all,

I have a few computers that I control with the same keyboard, mouse and 
monitor via an electronic switch. Namely a Linux PC and an Apple (macos 
x), but now also a PC with openBSD. Both Linux PC and Apple work fine 
with the switch, only with the PC with openBSD the mouse does not work. 
No problem with the keyboard and monitor. The mouse is of the wireless 
type, so radio controlled. What is the problem here, and what can I do 
about it?