Null Modem Serial DB9 Serial Modular Adapter Kit, 2x (DB9F to RJ45F) | Eaton
DB9 Female to Female Null Modem Mini Adapter
Monoprice Db9 Male/male Mini Null Modem Adapter : Target
Rocstor Premium 5ft 1 Port USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI - 1 x DB-9 Female Serial - 1 x USB Type A Male - Black - RS232 Serial Adapter - Y10C225-B1
9 pin Male to Female Null modem adapter (RS232)
DB25 Male to DB25 Female Serial RS232 Null Modem Adapter | Serial RS232 | Computer Cables | USB and PC