Serial (RS232) port connectors. Pinout and signals for the serial port connector
DB25 Male to 10-Pin (2x5) IDC Female Motherboard Header Serial RS232 Adapter | eBay
Silabs Cp2102 Usb Rs232 To Db25 Serial Printer Adapter Cable - Buy Usb To Rs232 Cable Driver,Usb To Rs232 Serial Db25 Adapter Converter,Usb Serial Adapter Product on Alibaba.com
RS232 RS422 and V 35 Interfaces ⋆ Sangoma
DB25 Female to RJ45 Adapter Converter - CNC Specialty Store
Tech Stuff - RS232 Cables and Wiring
The RS232 Standard
UC-275 | Brainboxes
All you have to learn about serial connector pinouts
Serial (RS232) port connectors. Pinout and signals for the serial port connector
6-Port RS232 DB25 Passive Splitter | Black Box
uxcell DB25 25Pin Male Adapter Board RS232 Serial to Terminal Signal Module : Electronics