Two PC share one RJ45 device such as ISDN, high speed internet cable & DSL modem connection, or vice versa. Designed to support Fast & Gigabit Ethernet with PCB board and all RJ45 datacomm applications. For security application, this switch can be used to connect one computer to two different local area networks, one at a time. It is ideal for data centers & government applications where a high level of security is in place. It is guaranteed up to 25,000 switching cycles, has heavy duty plastic case & sealed rotary switch to prevent dust and moisture, gold-plated contacts and 5 Year Warranty. (Connectors: 3 RJ45 Female)