4 bay nas max hard drives 4 hard drive mounting click hard drive access top hard drive location vertical internal interface sata ii target audiences home users small office home office soho internal file system ext4 raid levels 0 1 5 10 jbod 10 networking gigabit 101001000 connections 1x usb 30 2x usb 20 positions of connectivity ports 1x usb front 2x usb back 2x rj 45 back case tower display status without optical disc drives without p