Is this the serial port in my computer RS-232 D9 pin Connector

 

Hello,

Yes, that looks like the serial (rs232) connector.
See this page for more info on the connector:
http://www.hardwarebook.info/Serial_(PC_9)

See this page for use of the serial connector (look for 9 pin connections):
http://www.hardwarebook.info/Category:Serial

Greetings,
Bertus

 

Thanks i am really glad to hear this!