STARTECH SCNM9FM 10 ft DB9 RS232 serial cable

10 ft DB9 RS232 null modem cable

The StarTech SCNM9FM is a ten-foot DB9 RS232 serial null modem cable with one female and one male connector. It is designed for direct PC-to-PC file transfers or linking a serial printer to a nine-pin port. The grey jacket and cross-wired pinout suit legacy industrial and laboratory equipment. This cable serves technicians maintaining older serial infrastructures.

Check port gender and wiring before ordering

Verify that your host device presents a DB9 male port and the peripheral expects a DB9 female connection, or vice versa. Confirm the application requires a null modem cross-wired cable rather than a straight-through extension. Ensure both endpoints use RS232 voltage levels and that no other signalling standard is expected. The ten-foot length should match the distance between your two devices.

Sustained use in industrial environments

The moulded strain relief and shielded construction resist wear from repeated mating cycles in rack or bench settings. Signal integrity remains stable over the full length during long file transfers or continuous printer streams. The fixed pinout prevents accidental reconfiguration that could disrupt unattended operations. This cable is built for reliable point-to-point links rather than frequent re-patching.