All you have to learn about serial connector pinouts Wiring diagram usb to rs232 Sealink+232.pc
Rs232 db9 pinout interface cable 2108 sealink db9m sealevel Serial cable port rs232 pinout connection connector straight pinouts through conclusion Rs232 wiring uart
SeaLINK+232.PC - Sealevel
Wiring Diagram Usb To Rs232 - Wiring Diagram
All you have to learn about serial connector pinouts