4 bay nas nas enclosure max hard drives 4 hard drive form factors 25 35 inch hard drive type hdd hard drive access front hard drive location vertical internal interface sata ii target audience home users raid levels 0 1 5 6 10 51 networking gigabit 101001000 connections 2x rj 45 3x usb 30 case tower processor freescale arm cortex a9 clock speed 1 200 mhz ram 1 gb ram type ddr3 display status without optical disc drives without car