For me, the problem with this specific model of USB KVM switch as opposed to my old switch that used PS2 connectors is that it won't keep the USB connection alive when you switch away from either of the PCs.Since it dismounts the USB devices (keyboard and mouse) every time you switch away and then remounts the devices when you switch back, there is a good chance the devices will lock up. The instances of this happening occur more and more frequently as time goes by, and each time it happens the mouse and keyboard freeze up leaving me no choice but to reboot the machine.It's cheap for a reason. Skip this model and look for a switch that will always keep the USB connections alive on both machines no matter which PC you're using.