Delock Products 86604 Delock Serial Cable RS-232 D-Sub9 female to female null modem with narrow plug housing 10 m
RS-232 Null modem cable
Amazon.com: StarTech.com 3m RS232 Serial Null Modem Cable, Crossover Serial Cable w/Al-Mylar Shielding, DB9 Serial COM Port Cable Female to Male, Compatible w/DTE Devices, Black, F/M (9FMNM-3M-RS232-CABLE) : Electronics
Your Cable Store 6 Foot DB9 Female / DB25 Male Null Modem Serial Cable RS232
Amazon.com: StarTech.com 1m Black DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9 pin RS232 Null Modem Cable - 1 meter, Black : Electronics
Null modem - Wikipedia
Null modem - Wikipedia
StarTech DB9 RS232 Serial Male to Male Null Modem Adapter NM9MM
1ft (0.3m) DB9 F/F Serial RS232 Null Modem Cable - Beige | Serial RS232 | Computer Cables | USB and PC
DB9pin Female to USB RS232 Null Modem Cable for Two DTE Device Communication Dsub 9pin to USB2.0 NMC - AliExpress
Null modem - Wikipedia
FAQ - Straight Through Serial Cable vs Null Modem – DriverGenius - 一驱纵横
10 Foot DB9 Female / DB25 Male Null Modem Serial Cable RS232
DB9pin Female to USB RS232 Null Modem Cable for Two DTE Device Communication Dsub 9pin to USB2.0 NMC - AliExpress
wilbo666 / RS232
DELOCK 86886: Null modem cable, 9-pin, male - female, mini connector, 0.5 m at reichelt elektronik