Startech GC98FF, Connector A 1 - DB-9 (9 pin, D-Sub) Female, Connector B 1 - RJ-45 Female, Black, Included 1 - DB9 to RJ45 Serial Port Adapter. The GC98FF Modular Adapter features a DB9 female connector and an RJ45 female connector. Used for modular RS232, RS422 and RS485 connections, the adapter converts your DB9 male connection into an RJ45 female connection.