The QuickSwitch® 4292 Single Channel LC Duplex A/B/C/D/Offline Switch with RS232 Remote allows the user the capability of sharing a single port interface device connected to the "COMMON" port among four other devices connected to the "A", "B", "C", and "D"ports, or to isolate all ports in the OFFLINE position. Remote access can be accomplished using a DB9 RS232 connection and ASCII serial commands. The QuickSwitch® 4292 is enclosed in a 1U, full rack size, black anodized chassis designed to provide EMI/RFI shielding and fit in a standard 19" rack.