Used as a Time Machine back up for my iMac but now need something more compact. The unit contains 4 OWC 1tb SSD drives (see photo) and includes an Apple thunderbolt 2 adapter to connect to thunderbolt 3. You will require a SoftRaid licence to create a raid-or alternative software if applicable-unless you have a Mac which with disk utility you can format a couple of raid settings. As shown there are a couple of scratches but doesn't detract from performance. Unfortunately I have no original box but will be packed with care.