Formatting question

formatting a m230 I have option of FAT or FAT32 which should I choose and why if possible, thx.

I just formatted a m240.  I used Windows XP and FAT32.  I believe the general rule for formatting flash drives is FAT for a device with 2gb or less and FAT32 for 2gb or above.  I have never had a problem using FAT32 for devices with less than 2gb of memory.