The CrystalView system consists of two units, a Local Unit and a Remote unit. The Local unit connects to your CPU using a CPU adapter cable or a KVM switch. The Remote Unit connects directly to the keyboard, video monitor and mouse cables of a KVM station. The Local and Remote Units are connected together with up to 150 feet of industry standard CATx cable. The CrystalView Mini uses a microprocessor to emulate the keyboard and mouse for plug and play operation. The keyboard and mouse on the Remote Unit do not need to be connected for the PC to boot, only the Local Unit must be connected to the PC. The Serial/Audio model allows stereo audio to be transmitted in either direction across the CATx link simultaneously. Many serial devices like a Touchscreen can plug directly into the serial port on the Remote Unit The Mini model is small in size but loaded with state of the art technology. It is ideal for extending the distance between a CPU and a KVM station up to 150 feet.