Bought one of those IOGEAR 4-port USB KVM switch, for 4 PCs sharing one set of keyboard and mouse. (I don't switch the monitor at all). For the most part, it works okay. But about once every few days, the keyboard buffer will start to act weird. e.g. Anything I type, will just trigger an endless keystroke, like: "qwewqewsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" Non-stop. Since the KVM switch takes in power from the USB port and doesn't have its own power supply, there is no "ON/OFF" switch to reset it. In order to reset, I had to unplug the USB cord and replug it in - even need to change it to a different USB port on the PC. Not only that... it cures only 1 PC. When I switch the KVM to a second PC, same thing. And I have to unplug/plug on the second PC and so on. Really PITA. I bought the KVM and plugged the USB ports to the back of these PCs - where I really don't want to reach.