Name: Double-sided 4-disk NVME PCI-E X16 split card Model: PH44PRO Support hard disk: M. 2NVME protocol SSD/M. 2 PCI-E device transfer speed: 4 x 32Gbps Colour: Black Material: PCB Package Contents: 1 x NVME PCI-E X16 expansion card 1 x screw packs 1 x screwdriver 1 x short baffle 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. Using high-end PCB circuit board, gold plating process, good continuity, strong wear resistance, , high fire rating Front and back double-sided 4-disk expansion at the same time Compatible with 2242/2260/2280/22110 specifications Support M.2 M-KEY NVME protocol SSD and Optane support M.2 PCle protocol expansion cards and devices This product can run 4 NVMEs at the same time. But the motherboard must support PCIE signal splitting. The read rate of PCI-E4.0 O mode can reach 14000+Mb/S. LED soft light indicator When the disk is plugged in and powered on, the green light is on, and the green light flashes when reading and writing.