Here is the KVM that I have

There are PS2 ports on the front, and the only ports coming off the back are Monitor and USB. There are also 2 usb input ports on the back. When the mouse and keyboards are connected to the PS2 ports in the front, linux recognizes nothing. When I connect my mouse through one of the USB ports in the back, then the mouse works, but no keyboard still. I dont have a straight USB keyboard, and I don't have the money for a new one. I can't figure out what to do... I tried recompiling the kernel with no success, usb is enabled in the bios, the KVM switch works just fine when I boot into windows. Linux says that Keyboard and Mouse USB support are started when its loading, but I can't do anything with the keyboard when I get into Linux... I am trying to run redhat 9........

The guy in the article below is having the same problems that I am having.
Read here

No answer here, just letting you know that I don't think it's the presence of a KVM so much as a PS/2 to USB converter. I have a little PS/2 to USB converter for use with mouse or keyboard and it did not seem to work with the keyboard under 7.3 whereas I was able to get it to work with the mouse. I have not tried under 8.0 or 9.0, however.

I've also experienced some flakiness with PS/2 <-> USB and Game-Port <-> USB converters under Windoze 98, though they seem to have been (somewhat) resolved in W2K and WXP.

-G

I have noticed that the "Logitech Trackman Wheel" and the "Microsoft Trackball Explorer" will work plugged into my "ATEN CS-82A" KVM switch until I have to choose which driver I want to install for my mouse during installation...at that time neither of them will work until I directly plug them into the USB ports. My guess is drivers...anyone got any for either of these that will help with the KVM? Thank you.