4 bay nas memory capacity 16 tb number of installed hard drives 4 max hard drives 4 memory capacity per hard drive 4 tb hard drive mountings screwed removable drive hard drive location vertical internal interface sata ii target audience small office home office soho raid levels 0 1 5 10 jbod networking gigabit 101001000 connections 1x usb 20 2x usb 30 1x rj 45 positions of connectivity ports 1x usb front 2x usb back 1x rj 45 back case tower