From the manufacturer safeguard your data with QNAP external RAID enclosure The TR-004 can be utilized as a DAS (Direct-Attached storage) device, allowing you to directly access its content via USB. Featuring four 3. 5 inch SATA drive bays, while supporting a variety of RAID configurations, It give you the ability to store a vast number of files and data while ensuring against potential drive failures. Protects your data against drive failures hardware RAID on the TR-004 is made easy with the QNAP external RAID Manager, supported on both Mac OS and Windows. Now, you can easily configure whatever RAID you prefer, whether its as individual drives, or RAID 0, 1, and 5. With powerful RAID support at your fingertips, never loose data due to drive failure. Quick Facts flexible storage solution the TR-004 is an incredibly flexible storage solution. Simply use it as a DAS and store your files, or even expand the capacity of your QNAP NAS, and create storage pools and snapshots. Powerful hardware RAID supporting most RAID configurations, The TR-004 protects against drive failures. With the QNAP external RAID Manager, easily configure RAID groups, and monitor its health. Capacity: 4 Bay The TR-004 can function either as direct Attached Storage (DAS) or an expansion unit for a QNAP NAS. This model Connects via a USB Type-C port (same form factor as the Thunderbolt 3 port) featuring a hardware RAID controller. The TR-004 supports RAID 0, 1, 5, 10, JBOD, and individual disks.