The TR-004 4-Bay USB 3.0 RAID Expansion Enclosure from QNAP is unique in that it allows you to expand the storage capacity of not only your QNAP NAS, but also your host Windows, Mac, or Linux system. Use it in this fashion as a DAS (Direct-attached Storage) and access its content simply by connecting it to your system using its integrated USB 3.0 Type-C port and the included USB Type-C to Type-A cable. The TR-004 features four hot-swappable 3.5" SATA drive bays that support 3.5" and 2.5" hard drives, as well as 2.5" solid-state drives. The drive bays can be configured hardware- or software-controlled RAID 0, 1, 5, and 10 modes, each of which offers performance, data redundancy, or a combination of both. For those who do not require a RAID, Individual and JBOD modes are also available. The brings you a reliable and secure storage capacity expansion solution that supports data transfer speeds up to 227 MB/s and keeps cool using a 120mm smart fan.