QNAP Quad M.2 PCIe SSD expansion card; supports up to four M.2 2280 formfactor M.2 PCIe (Gen3 x4) SSDs; PCIe Gen3 x8 host interface; Low-profile bracket pre-loaded, Low-profile flat and Full-height are bundled x73, TS-x77, TVS-x82, TS-x80U, TS-x80U-SAS, TS-1685, TS-x85U