Recently I have been using my Xbox 360 gamer profile a lot at my office to stream music using Zune. While I do have an Xbox 360 at my office and at my house it can be a pain because I have to lug the hard drive with my Microsoft Xbox 360 Gamer Profile on it back and forth between the two locations. Last week I ordered a 16GB USB flash drive to move my account onto so I would only have to take a USB stick with me when streaming music at locations that already had a Xbox 360 in place.
Instead of having a hard drive on your Microsoft Xbox 360 you can instead use any USB hard drive. The limitation is the fact that you can only format 16GB of any USB drive to work with the Xbox 360 so unless you want multiple partitions on the USB drive I would actually just purchase a USB flash drive with a maximum of 16GB of usable space. To use the USB flash drive with your Xbox 360 you have to first format the drive which is explained in detail below.