Supermicro MCP-290-00059-0B 4U Rackmount Rail Kit Supermicro MCP-290-00059-0B Rail set, quick/quick, default for 4U 17.2 ... Please ensure that your original part number matches this exactly, or check with the manufactuer for compatiblity. Customers are responsible for compatiblity. This part is guaranteed to be fully functional, original and authentic. Supermicro MCP-290-00059-0B Rail set, quick/quick, default for 4U 17.2 ...