XBOX 360 Question

Simple answer is NO. You can only use up to 16gb PER USB slot. I think there are three so in theory you could use 5 16gb usb sticks and total 80GBs + your 2.9 from internal flash. Long answer you can crack open any 360 hd and place the chassis into the slims expansion port (sata). Is it safe or responsible and can M$ detect it????? Thats up to you. It does show the microsoft logo as the other drive connected. I have added a few 120's to slims and have yet to have any problems. Of course they also sell a 250gb for the slim. I think you can grab them for about 100 at a gamestop.