— Arcade SKUs made 10-23-2008 Lot #0843X by Team FDOU. — The new power supply is now 150W (25W less than those used with Falcon boards) and the plug has of course been changed so u can't plugin this PSU into an older motherboard. — The onboard flash chip has grown from 16MB to 256MB. Microsoft included internal memory storage, so the Arcade SKU now ships without (external) Memory Unit and the new NXE dash will install fully on the flashchip — The internal memory can also be used to store gamesave data, XBLA games, videos or whatever ... u can use it asif it was an external MU