1.XIC PE4165-4IL connects to NVMe SSD or PCle through SlimSAS (SFF-8654) Cable,bandwidth PCle4.0 x16. 2.This card requires the motherboard BIOS to support the PCIE slot split function,and uses M6-level high-speed PCB board to reduce the length of the signal line and minimize signal loss. 3.The board height does not exceed 40MM (excluding installation baffles),cost-effectively upgrade the system to meet the high-performance needs of today's data centers and enterprise-level applications 4.U.2 SSD is 4 times faster than SSD,providing faster read and write speeds,high-speed file access and transfer,and fast boot time 5.Use SFF-86548I to 2xU.2 data cable to connect the 2.5-inch NVMe SSD to the motherboard. Supports most operating systems and has stable performance. Interface type: 2xSFF-86548I Supported equipment: 4x NVMe SSD hard drive Access bus: PCle x16,requires motherboard; supports split function Different Batches May Have Differences In Product Appearance,Color,And Printed Characters,Which Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1x PCI Express 2-Ports SlimSAS Card 1x Half Height Baffle 1x Full Height Baffle (Already Installed) 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.