title: Disable 2nd USB keyboard
body: <p>I have an environment where two (2) keyboards and two (2) mice are connected to a PC that may be running XP or Win7.  The purpose is to allow co-user interactions for training on a desktop.  At times I need a way to disable the 2nd kb/mouse for all user interactions.  I'm guessing this could be done either at the device HID level or at the USB level but need some C#/VB code that I could integrate into a system tray application.</p>