This cable is used to split one DB9 9 pin female to two DB9 9 pin male. It is ideal and cost effective way for connecting two DB9 RS-232 serial peripheral devices to PC source. Double shielded for maximum EMI/RFI protection. Cable color: Beige. AWG: 28 AWG. Standards: RoHS, UL, CSA, ISO 9001:2000 manufacturer. Application Note: Connected DB9 serial devices can only be used one at a time.