1. Four hard drives have LED work lights.2. Steady power on, flashing when reading and writing.3. NVME four-disk design, stable installation, can run 4 NVME disks at full speed at the same time.4. Support 2U server small chassis installation, built-in multiple sets of high-power DC modules can continue to work stably.5. With 4 hard drive Heat Sink, with thermal silica gel pad, quickly conduct heat to avoid overheating and slowing down;Specifications: Item name: PCIE X16 four-disk NVME expansion cardSupport : 22X80mm, 22X110mm NVMe SSD (not included in SSD hard disk)Heat Sink: support M.2 interface 2280 specification solid state drive, suitable for single/double-sided chip particle SSDssuitable for M2 M Key SSD.Support: Only supports motherboards that can split PCIE channels.note: If there is any difference in accessories, it will not affect the productMaterial: plasticcolour: blackPackage Contents: 1 x Adapter card1 x Short baffle1 x screwdriver1 x Chassis fixing screws4 x hard disk fixing screws4 x hard disk fixing column8 x Thermal silicone sheet4 x Aluminum alloy heat sink