The C39 combination socket enables the connection of both C14 and C20 plugs into a single socket for computer connectors with both 10A and 16A plugs. Like its NEMA 5-20P counterpart, the C39 outlet allows for both 15 and 20 A inputs. The flexibility of this universal outlet allows you to change equipment without having to re-order a new rack PDU to meet specific rack outlet requirements. Until now, you've been forced to pre-decide the C13 and C19 sockets needed for your deployment. Due to the changing dynamics of IT applications, you may quickly outgrow your PDUs or require a change in the number of outlets.