Supports dual-disk U.2 Compatibility: supports U.2 interface, 2.5-inch SATA interface (SATA cable required) LED working indicator: plug in the disk and power on: green light on, read and write: green light flashing. Thickened gold fingers, gold plating process, more secure contact and more stable data transmission. Supports PCIE 4.0 backward compatible with PCIE 3.0 Supports X16/X8 card slots Note: The motherboard must support PCIE X4X4 split Screwdriver: Random color, don't accept the specified color Colour:Black+White Material:PCB Package Contents: 1*Dual-disk adapter card 1*Baffle 2*SATA cables 1*Screwdriver 1 pack * screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.