We're not sure how this one sneaked by, but it looks like Microsoft slipped a new Xbox 360 Jasper motherboard past us earlier this year, according to a poster in the XboxHacker forums. Found in a Japanese Xbox 360 Arcade this past April, the new motherboard is essentially the same as the previous (read: probably the most reliable 360 model so far) with one small difference. Rather than 256MB of internal storage, this one appears to be packing 512MB.

While the unit pictured above is Japanese, some members of the Xbox-Scene forums claim to have the board as well, meaning the new hardware may already be available in North America. We're not aware of any surefire way to spot one of these new units without taking them out of the box, though the ones we've seen mentioned were manufactured in April 2009. Outside the box, you'd just need to see how much memory was listed in the settings menu.

Anyone out there have one of these new Jaspers? Let us know in the comments.

[Via Xbox-Scene]

This article was originally published on Joystiq.

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