Kramer Vs-4x4fw Desktop Firewire 4x4 Mechanical switcher for firewire (ieee 1394) signals, using 6 pin connectors Editorial Reviews ... Product Description | The Kramer VS-4x4FW is a high quality mechanical 4x4 switcher for Firewire (IEEE 1394) signals, using six-pin Firewire connectors. It is designed for applications requiring a compact desktop unit for routing Firewire signals (Digital Video, Data, etc.) between any one of four sources to any one of four acceptors. Note that the VS-4x4FW can only provide one signal path at any given time (one active crosspoint). It cannot distribute a signal to multiple outputs simultaneously. High quality...more