Its 2TB seagate HD which is also plugged to electricity besides other machines. I formatted HD doe I had to use external tools( FAT32 Format) since windows allows me only to change format to NTFS which is default or exFAT( FAT32 option isnt available anywhere). I tried to launch few games from it on Xbox, unfortunately I get error popout "this game didnt download correctly" or something like that, u prolly know what im talking about. There is also(but not always) $recyclebin file which is hidden when browsing on laptop but visible on Xbox. I know this descritpion aint amazing but I dunno what else I should post here. Ill try to post updates as fast as possible.