Dual M.2 22110/2280 PCIe NVMe SSD expansion card Port: 2 x M.2 22110 or 2280 PCIe (Gen2 x 4) NVMe SSD slots PCIe and lanes: 4x PCIe Gen2 Mount: Low-profile (Standard). Low-profile flat and full-height brackets are also included. Dimensions (L x W x H): 157 x 68.9 x 20.6 mm Note: Series TS-x77 and TVS-x82(T) only support installation of QM2 into Systemzone PCIe slot brackets (PCIe Slot 1).