Aquacomputer KryoM.2 PCIe 3.0 x4 Adapter for M.2 NGFF PCIe SSD, M-Key with Passive Heatsink PCIe 4x adapter for M.2/M-Key NGFF PCIe SSD Includes passive heatsink Compatible with the M.2 form factors 2280, 2260 and 2242 Dimensions: 126 x 84 x 20mm