USB 3.1 USB3.1 to 2 Dual NGFF M.2 B Key SSD RAID Adapter Converter Card External Enclosure Case Cover Box USB 3.1 a super fast and high-capacity data transfer solution. In default RAID0 mode data transfer speed up to 10Gbps. Supports 2 NGFF SSD at the same time. Stable chipset ASM1352R. Supports RAID0 (default), RAID1 & PM.