The ToughArmor MB873MP-B is a Ruggedized Eight Bay Removable M.2 NVMe SSD Enclosure that fits a single 5.25" optical drive bay of the computer system and supporting PCIe 4.0 64Gb/s data transfer rates through 8 x OCuLink (SFF-8612) connectors. It is made out of heavy-duty full-metal construction and uses removable M.2 SSD trays that support tool-less drive installation/removal for effortless drive maintenance. In addition, the MB873MP-B is equipped with dual 40x20mm cooling fans in the rear to remove the heat generated by the high-speed PCIe 4.0 SSD for best cooling performance.