The ex-47951 rs-232 extender can use for all pc. Workstation or server whit a rs-232 interface. The ex-47951 it equipped with a 9 pin connector that you can directly connect to your rs-232 interface. He extended the rs-232 signal up to a maximum length of 1200 meters. For the transmission between the master and slave is a cat. 5 Network cable required.