QNAP Quad M.2 SATA SSD expansion card; supports up to four M.2 2280 formfactor M.2 SATA SSDs; PCIe Gen2 x4 host interface; Low-profile bracket pre-loaded, Low-profile flat and Full-height are bundled TVS-x71U, x73, TS-x77, TVS-x82(U), TS-x80U, TS-x80U-SAS, TS-1685, TS-x85U, TS-x89U