On a semi-related note, if the drive is required to be in FAT32 format, make sure you buy a drive with 512-byte sectors. That is, make sure the drive is NOT one of the new "advanced format," 4096-byte (4kB)/sector drives. Also make sure it is less than or equal to 2TB in size. Additionally, this means you will not be able to copy any file larger than 4GB onto the drive.
--Patrick