2 bay nas memory capacity 4 tb max hard drives 2 hard drive form factors 25 35 inch hard drive types hdd ssd internal interface sata iii target audience home users internal file system btrfs ext4 external file systems ext3 btrfs ext4 ntfs hfs fat raid levels 0 1 jbod synology hybrid raid networking gigabit 101001000 connections 1x rj 45 1x usb 30 1x esata 2x usb 20 position of connectivity ports 1x usb front number of user licenses 2 04