Silverstone Expansion Card Model SST-ECM20 Internal Ports: PCI Express x4 / SATA 6Gbps / M.2(NGFF) Data Transfer Rate: 6Gbps Operating Systems Supported: Microsoft Windows / Mac OS X / Linux Compatibility: M.2 SSD (2230, 2242, 2260 and 2280) (30mm, 42mm, 60mm, 80mm) Dimensions: 1.00 x 3.00 x 5.00 Weight: 0.90 lb.