Just found this on the Q & A on https://www.akaipro.com/kb/akai-pro-for ... questions/
so 2 TB it is!
Can I use external storage devices with the Force for additional storage space?
Yes! The Force can use external USB hard drives, USB flash drives, SD cards, and you can even install a 2.5" SATA drive (up to 2TB) inside the Force's enclosure!
