New USB 2.0 to Serial RS232 DB9 9Pin Adapter Converter Cable, adds a serial port

DB9 rs232 to RJ11 serial communication cable

RJ45 to RS232 DB9 9-Pin Serial Port to RJ45 Ethernet LAN - New in Sealed Package

GGLABS T232 - serial RS232 mini signal breakout and monitor DB9M-DB9F - COM port

10 x SYBA IO Crest PCI PCIe Serial DB9 Port with Half Height Low Profile Bracket

SecuGen Unity 20 Serial Fingerprint Scanner HU20-ASF Wired RS-232 DB9 Connector

New SUNIX MIO6469A Serial Parallel Expansion Multi I/O Card PCI-E RS232 + DM25

SIIG Single Serial Port/RS-232 Single Parallel Port PCIe Card (JJ-E20311-S1)