1. PCI-E 4.0 raid0 Mode, Read Rate Up To 14000+Mb/S 2. Front And Back 4-Bay Expansion At The Same Time, Compatible With 2242/2260/2280/22110 Specifications, Supports M.2 M-Key Nvme Protocol Ssd And Optane, Supports M.2pcle Protocol Expansion Cards And Devices 3. Equipped With Full-Height And Half-Height Baffles, Which Can Support Installation In 2u Server Small Chassis. 4. Simultaneous Heat Dissipation On Both Sides, Making Transmission More Stable 5. Led Soft Light Indicator, The Green Light Lights Up When The Disk Is Plugged In And Powered On, And The Green Light Flashes When Reading And Writing. 1. Name: Double-Sided 4-Disk Nvmraidpci-Ex16 Split Card 2. Support Hard Disk: SSD/M.2PCI-E Device With M.2nvme Protocol 3. Transmission Speed: 4x32Gbps Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1x Array Expansion Adapter Split Card 1x Baffle 1 Set x Screw Mounting Accessories 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.