Amazon.com: Hard Disk Drive HDD for Xbox 360 Slim (120G) : Video Games
Microsoft Xbox 360 S Model 1439 4GB W/10 Games & Controller No Hard Drive Tested | eBay
Bought this bundle from the original owner for $100, I think that's a pretty good deal. All it really needs now is an official hard drive. At the very least, it has
Xbox 360 technical specifications - Wikipedia
Amazon.com: Replacement 4GB Xbox 360 Slim Console Only System (Renewed) : Video Games
BOXED BLACK XBOX 360 SLIM 4GB/250GB HDD CONSOLE + KINECT, + 3 RESIDENT EVIL GAM 885370235876 | eBay
How to play XBox 360 games from an external hard drive? - Quora