Mini r52 flat pin or round pin stereo harness?

I've just got a 2006 first generation mini cooper convertible r52 (non s) and was wondering if my stereo has a flat pin or a round pin? I was looking into an aftermarket stereo and they asked if I had flat or round :/ I've got a standard CD player with a iPod connection instead of a 6 cd stack, from a little online research it looks like a BMW one not a alpine but could be wrong. Won't let me upload pic or link it to a pic :/

Cheers for any help :)