USB VGA KVM Extender with Audio and Virtual Media Support (250m). The CE800B USB KVM Extender with on-board audio allows access to a computer system from a remote console (USB keyboard and mouse, monitor, stereo speakers, and microphone). It is perfect for factory and construction sites, or any type of installation where the console needs to be in a conveniently accessible location, but you want the system equipment to reside in a safe place - away from dust, dirt, and harsh environmental influences.