It's not that hard to find, it's underneath the dash by the bonnet release.
It's protected by a cover, but you'll find that those weird torx screws aren't holding the cover down.
Just use a key/penny to open it!
(Picture stolen from a right hand variant http://www.obdtester.com/faq/obd-2-generic/where-do-i-find-obd-ii-data-link-connector)