The Brick was a replacement for the original Xbox Slim in form and function. Works as advertised so far. My intuition is a 5 star rating, but as an electrical engineer I just can't understand how a power supply can ever be an Achilles cure for a system, but just take a look at the blogs and you'll see OEM performance supplies are full of problems. Mine was a classic example of OEM power supply problems. I use Xbox games and apps from time to time, so I was surprised that OEM supply stopped immediately when this happened. BL: If this replacement lasts 24 months, it will outperform its predecessor and thus deserve a 5th star.