This is what it looks like
http://www.linkecu.com/products/productspageimages/lemg3-photosm
It does not use the orginal ECU housing Link the G1
It has a plug with lost of wires to an adpater, connecting to a Subaru 4 plug scoket
It says Link G3 on the case
It has a some sort of boost/pressure sensor pipe connector and a USB connector
Any other way I can identify it easily as I don't have it to hand. It is stored at my parent's house some 200 miles away
Mark