802.11n wireless adapter recommendations (XBox 360 compat preferred)

I'm looking for recommendations for a 802.11n adapter which works with Windows and XBox 360. Preferable something that works with 5GHz Wifi networks @ 300 Mbps

From superuser psychotik

• Your only real bet here is to get the Wireless N adaptor for the 360 that Microsoft puts out. Anything else is not compatible with the 360.

  psychotik : you can't even configure it on Windows and then attach it to the XBox?

  Ryan Gooler : Nope, driver issue. The 360 is set to only work with the official adapter.
  From Ryan Gooler