RS232 DB9 Manual Switch Box 2 Port - CNC Specialty Store
6ft Serial Extension Cable, UL, DB9 Male to Female
6-25ft DB9 9 Pin Serial Cable Cord RS232 28AWG Male M/M Molded D-Sub Port PC Mac | eBay
RS232 click - features a standard RS232 DB9 port and a MAX3232 IC
Amazon.com: Antrader 30CM/1Ft RS-232 Serial Cable 9 Pin DB9 Male Gender Changer Coupler Connector to 2.54mm 9 x Single Jumper Wires Adapter Cable Pack of 4 : Electronics