Features: brand new and high quality Adopt high-end PCB circuit board, surface gold plating process, strong wear resistance, oxidation resistance, and high fire rating. Support PCI-E split or PCI-E for Raid function;NVME SSD and for M. 2 PCI-E interface device Front and back sides with 4 bays for 22110 2280 2260 2242 specifications, Support 4 x 4 full channel full speed Brings you full-speed PCI-E4.0 for RAID 0 mode, read speed up to 14000mb/s Double-sided heat dissipation at the same for time, two speeds can be adjusted, transmission is more stable Equipped with full-height half-height baffles, support 2U server, fit for small chassis installation Specifications: Item: Double-sided 4-disk NVME for RAID PCI-E X16 Split Card Support Hard Disk: SSD/ for M.2 PCI-E Device with for M.2 NVME Protocol Transmission Speed: 4x32Gb 14000+Mb/s Size: approx 225x77mm/8.86x3.03in Package Includes: 1x Adapter 1x Manuer 1x Cabinet Screw 8x Screws (2 Kinds/4pcs each) 1x Screw Driver 1x Full Size Baffle 1x Half Size Baffle note: This product can run 4 NVMEs at the same for time, but the motherboard must support PCIE signal splitting Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.