I just bought a justcom JC-102CUA 2-port KVM to share the console for my PC with my powerbook. It turns out that the only way to toggle the KVM is to press scroll-lock twice. This works fine for switching between PCs or from the PC to the Mac, but when it's already switched to the Mac, nothing happens.
When switching, I can see the scroll lock light turn on and back off, but with the Mac, it seems impossible to turn the scroll-lock light on. It seems that the key is used for something else or not accepted on the Mac.
Is there a way to get the KVM to work with the Mac?