Key Features Easily add additional drive capacity to a Thunderbolt NAS Missing mode protection Powerful QTS Storage Manager Efficient backup solution for Thunderbolt NAS Smart power design Easily add additional drive capacity to a Thunderbolt NAS Simply connect the TX-500P to a Thunderbolt NAS via Thunderbolt 2 cables & power it on. The Thunderbolt NAS will automatically detect the hard drives in the TX-500P as newly-installed local drives. The Thunderbolt NAS capacity can then be seamlessly expanded as a large volume by using the powerful QTS Storage Manager.