The PLC14YW Plug-Lock Insert fits snugly over the end of a detachable C13 power cord to ensure it stays connected to a C14 inlet and that critical equipment remains powered. Its yellow color-coding helps you identify the cord quickly in a crowded PDU or rack. A no-clutter alternative to zip ties, the PLC14YW is also a money saver next to more expensive proprietary electrical-cord locks.