Lindy RJ45 port locks prevent unauthorised use of RJ45 ports to access networks and systems. They plug into the ports with a special insertion key and can only be removed using a key of the corresponding colour. 20 x RJ45 port blockers, black Blocks unauthorised access to RJ45 ports Prevents users from inserting cables into the RJ45 port Port locks are almost flush with the port front to prevent forced removal without a key Set of 10 blockers without a key (ref no. 47892), key (ref no. 47890) Each key works only with a lock of the same colour Please note: The lock only acts as a basic physical and visual deterrent to tampering. It will not prevent a determined attacker, intent on gaining physical access to a port.