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 click removable drive hard drive location horizontal internal interface sata ii target audience small and medium sized businesses smbs raid levels 0 1 5 6 10 jbod networking gigabit 101001000 connections 2x usb 20 3x usb 30 2x rj 45 positions of connectivity ports 1x usb front 4x usb back 2x rj 45 back c