USB drive for updating BIOS - what allocation unit size to use?

[Loosley]

Another BIOS updating question (motherboard is an Asus P8P67 PRO, but this is a general question).

I'm formatting a USB drive that will contain a motherboard BIOS .rom file. Here is the info from the Windows 7 Format dialog box:

Capacity: 3.65 GB
File System: FAT32 (Default)
Allocation unit size: 4096 bytes

Does it matter what allocation unit size I use when formatting the USB drive as FAT32? Is 4096 bytes OK?

 

[Daemas]

leave it alone, if you already messed with it, quick format it back to default file system and allocation size

 

[fffblackmage]

You should be able to select "default."