it is formatted to FAT32, I have 2 different HDD one is 60GB and one is 2TB. I have 3 different enclosures, one is USB 2.0 and one is USB 3.0 and one is the generic one that came with the Seagate drive. Both of there drives and all 3 of the external cases are recognized immediately by a PC. the PS3 recognizes a 32gb NTFS thumb drive instantly. I am looking to back up PS3, PS2 and PS1 games, it is around 750GB and trying to do this via FTP takes 40 or more hours. I have tried scanning for games in multiman. any help or advice would really be appreciated.