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
Amazon.com: LIANSHU DB9Pin Null Modem Adapter DSUB 9Pin Male to Female Slimline Data Transfer Serial Port Adapter. (100Pack) : Electronics
Monoprice DB9 M F Null Modem Adaptor for sale online | eBay
Null Modem Adapter | RS 232 null modem
CC2045B-FF - DB9 Female to Female Standard Serial RS232 Null Modem Adaptor