PCI-E4.0RAID 0 mode The read rate can reach 14000+Mb/S. Compatible with 2242/2260/2280/22110 specifications. Support M.2 M-KEY NVME protocol SSD and Optane. Expansion cards and devices that support the M.2PCle protocol. 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. Type: Double-sided 4-disk NVME PCI-EX16 split card Model: PH44PR0 Support hard disk: SSD/M.2PCI-E device with M.2 NVME protocol Transmission speed: 4 x 32Gbps Type: Riser Card Data transfer speed: 14000 (MB/s) Feature 1: Double-sided 4-disk NVME PCI-EX16 split card Feature 2: PCIE X16 to M.2 M-key NVME riser card color: Black Material: PCB Package Contents: 4 x Riser Card 4 x Screwdriver 4 x Case Screw 16 x Lock Plate Screw 16 x Mobile Stud 4 x Full Height Baffle 4 x Half-Height Baffle Baffle style random,No designation accepted 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.