StarTech 25 pin RS232 Null Modem Adapter Male Female, NM25MF, nos

USB 2.0 to 9-pin RS232 COM Port Serial Convert Adapter CH340G NEW

Phoenix Contact PSI-DATA/FAX-MODEM/RS232 Industrial Analog Interface, RS-232

Mitel MT3530BE BELL 103/V.21 Single Chip Modem, ISO2-CMOS, PDIP-28

1PCS 6Pin PL2303HXD USB to RS232 TTLCable module for win XP VISTA 7 8 Android

PL2303TA /PL2303HXD 6Pin USB to RS232 TTLCable Module for WIN XP WIN7/8.1 US

MaxStream XCite-PKG-R RF Modem Kit 900 MHz RS-232/485 Antenna Cables Adapter

Insys MODEM RS-232C