Serial (RS232) port pinout and signals
The above example is for a 25 pin connector but for a 9-pin connector the pin ... Connectors and signals, PC pinout and signals, Full DB25 RS232 port pinout ...
Nutchip - Interfacce per la programmazione col PC
You can also buy one for by yourself with a couple of 9-pin D connectors ... (female on the PC), pin number, 9 pole (male on the PC), RS232 name, direction ...
Weasner's Meade ETX TechTips
Next: "rs232" and "serial" are the -same-. They're (poorly used) synonyms. The (or each) 9-pin connector (about an inch wide, right? ...