5 bay nas memory capacity 20 tb number of installed hard drives 5 max hard drives 5 memory capacity per hard drive 4 tb internal interface sata target audience small and medium sized businesses smbs internal file system ext4 external file systems ext3 ntfs fat raid levels 0 1 5 6 10 jbod networking gigabit 101001000 connections 1x esata 1x hdmi 1x mic input 1x line input 1x audio out 4x usb 20 1x usb 30 1x vga 2x rj 45 case tower process