2 bay nas number of installed hard drives 4 max hard drives 2 memory capacity per hard drive 2 tb hard drive mountings click removable drive hard drive location horizontal internal interface sata iii target audience small and medium sized businesses smbs raid levels 0 1 jbod networking gigabit 101001000 connections 2x usb 30 2x usb 20 2x rj 45 positions of connectivity ports 4x usb back 2x rj 45 back case tower processors intel atom d2550 dual