The retail ones, CK, were just what you'd expect: the usual lush MSI packaging, all the trimmings.
The OEM ones, which were billed as being exactly the same, came in an anti-static bag with (I think - it's a long time ago now, long enough for the two year warranty to have run out) just a manual and a driver CD. Was the manual different? Can't remember. There were a few little things missing - can't remember what, nothing important, jus that the box looked sort of empty. And the box wasn't from MSI, it was a generic "Legend" box provided by the wholesaler. Perfectly solid enough for shipping in, but no frills at all. Presumably. Legend bought them in boxes of 20 or something, packed loose in cardboard slots with just the anti-static bags.
The boards themselves were marked MSI KTsomething LITE. They were supposed to be the same exact boards as the retail ones but they were not. They looked sort of low rent - I forget why, but I remember looking at them and feeling a bit sort of disappointed. They were for sale in the ordinary wholesale way, though I don't think you would have been able to just order one at retail. They were obviously intended for the larger OEMs who buy in carton or multi-carton quantities. (If they's been worth a pinch of donkey poop, I'd have done that myself.)
Err ... did I leave anything out? Mention that Legend were (I think) an official MSI dristributor? Good guys, anyway. They always honoured the warranties on them. I wonder how many they got sent back? Probably hundreds and hundreds of them, if mine were any guide!