Easily connect two computers or terminals to one modem.- A passive plug-and-play device for splitting serial ports.- Connect two RS-232 devices or terminals to one modem without switching.- Has two DB9 female host ports and one DB9 male modem port.Further Details- Passive, port powered. No external power required.- Can be used to combine two 9-pin DTE ports to one 9-pin DCE port.- Great for either temporary or permanent installations.- Simple setup. No configuration needed.