SERVER TECHNOLOGY PTCORD-L1. P-Lock is quickly becoming the standard to prevent accidental disconnection of power cords from PDU outlets. P-Locks are designed with "P-shaped" clips on each side of the plug housing. These clips produce an audible "click" when inserted assuring a secure locking fit between the plug and the outlet. While P-Lock Locking Cables will work in ANY PDU, they are 100% compatible with Server Technology Lockable PDUs, and the only locking cable compatible with new high density Server Technology HDOT PDUs.