The ICY DOCK MB834M2K-B 2 x M.2 PCIe NVMe SSD Mobile Rack for External 3.5" Drive Bay. Introducing ToughArmor MB834M2K-B, the world?s first ruggedized M.2 PCIe NVMe SSD tool-less removable rack. Your M.2 NVMe SSD no longer requires to be installed on a motherboard or a riser card with a tiny screw, but it can now be installed and accessed from the front of your computer without any tools! The ToughArmor MB834M2K-B comes with a patent-pending tool-less M.2 drive installation design which will alleviate the pain that many users experience when installing M.2 drives and offer easy drive maintenance and system upgrading. The ToughArmor MB834M2K-B supports blazing-fast PCIe x4 transfer speed up to 32Gb/s via MiniSAS HD (SFF-8643) and accepts all standard M.2 drives lengths from 30mm to 110mm (2230, 2242, 2260, 2280, 22110). In addition, while working together with numbers of ventilation holes around the enclosure, each drive tray is equipped with a high efficiency aluminum heat sink to ensure all the M.2 NVMe SSDs remains within their optimal temperature even when it is under full load.