This heavy-duty IEC 60320 C20 to IEC 60320 C21 extension cord features 12 AWG conductors, making it suitable for high-performance computers and network devices. It is a reliable solution for large server applications that require a higher-rated, heavier-gauge power cord. The C21 connector has two beveled corners and is rated to a higher temperature rating. The C22 male inlet is used primarily on Cisco and Juniper Networks equipment to a UPS system or PDU, or to replace or upgrade a standard power cord provided by the device's manufacturer.