what is a data link connector (DLC) look like? be VERY VERY spacific

http://files.automotiveforums.com/uploads/601217dlc.jpg

Data Link Connector (DLC)
The provision for communicating with the control module is a data link connector (DLC). The DLC is usually located under the instrument panel. The DLC is used in order to connect to a scan tool. Some common uses of the scan tool are listed below:

Identifying stored diagnostic trouble codes (DTCs)
Clearing the DTCs
Performing the output control tests
Reading the serial data