StarTech.com NM9MF DB9 RS232 Serial Null Modem Adapter, DB 9 (M) to (F)

Null modem adapter DB-9 (M) to DB-9 (F) A cost-effective way of converting a straight through cable into a null modem cable Easy to use and intall Backed by StarTech.com's lifetime warranty for P/N: PCI2S232485I