1. 4*32Gbps signal, expanded simultaneously 2. The motherboard supports PCI-E split or PCI-ERAID function, and supports PCI-E36, 4.0 transmission protocol 3. Four disks correspond to four LED indicators. The LED will light up only when the SSD is connected. The SSD read and write LED can flash. 4. Compatible with multiple systems, compatible with a of mainstream operating systems, driver-free installation, just plug it in and use it 5. Except for Win8/10 system, which is driver-free, other systems need to install drivers for use. Model:NVME Protocol Disk Array Card 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: 1 * Hard Disk Expansion Card 1 Set * Screw Installation Tools 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.