SanDisk has just announced that it's now shipping the first licensed Xbox 360 USB flash drive, which can be used to transfer gamertags, game saves, map packs and Arcade downloads.
The small flash drive would be used to transfer that data from one console to another. This would be a "Plug-and-Play" device and even comes with one month subscription to XBOX Live Gold.
The flash drive itself is expensive when compared to other flash drives but, your really paying for the name (XBOX 360 is stamped on the side) and satisfaction of knowing it will work.
The 8GB drive retails for about $35 while the 16GB goes for around $70.