Model
The original Xbox.
Released on 15/11/2001 in America, 22/02/2002 in Japan and 14/03/2002 in Europe.
Motherboard
Motherboard
Showing first revision.
Controllers are plugged using a separate daughterboard.
Missing SDRAM chips are on the back and there are four unpopulated SDRAM slots.
Motherboard with important parts labelled
Diagram
Main architecture diagram
Each controller is connected to a separate USB hub.