Connector ports?

I have a Dell Inspiron laptop with a 15-hole connector port and a 7-hole connector port (black). Could someone pls tell me what those connectors are for? Thanks

Which model laptop is it? They're most likely display/communication (COM) ports.

The laptop is Inspiron 700m. If I'd like to hook it up to my TV which connector port should I use pls- the 15-hole (black) or the 7-hole (black). Thanks.

The 15-pin trapezoidal shape connector is the VGA connector. The 7-pin circular connector is the S-Video connector. I would suggest connecting to your TV with the VGA connector as that's going to net you the best picture output.

Thanks for your time.