Dual M.2 22110/2280 PCIe NVMe SSD expansion card Connector 2 x M.2 22110 or 2280 PCIe (Gen3 x 4) NVMe SSD slots PCIe and Lanes PCIe Gen3 x 4 Bracket Low-profile (default). Low-profile flat and Full-height brackets are also included. Dimensions (L x W x H) 170.5 × 68.9 × 19.3 mm.