Convert one 3.5inch hard drive bay to four PCIe NVMe M.2 SSDs. No need to install additional drivers. Increase your storage space immediately. Support PCIe NVMe M.2 SSD lengths of 30mm, 42mm, 60mm, and 80mm Equipped with an reading indicator light, it flash blue when reading However, since the specifications of each M.2 SSD are different, if the LED on the M.2 SSD slot you inserted does not light up Excellent transmission speed Dual-port SlimSAS 8i (SFF-8654) connectors enable high-speed transmission, up to 32Gbps for PCIe 3.0 and 64Gbps for PCle 4.0 Utilize the 3.5inch hard drive space of your chassis to expand more M.2 hard drive locations to meet your storage expansion needs Product model:-SDP13 application:3.5inch disk slot SSD hard drive capacity:PCIe NVMe M.2 SSD x 4 Support key position:PCIe x4 NVMe specification M key Power connector: 15PIN x 1 Connection interface:2port SlimSAS 8i (SFF-8654) connector (The product appearance and printed words depending on the batch, but this does not affect use) Color: As shown Material: PCB Package Contents: 1 * PCIe NVMe M.2 SSD adapter 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.