Supports PCI Express 4.0 x4x4x4x4, supports 4 M.2 NVMe full speed slots Expansion cards support 2242, 2260, 2280, 22110 and other SSD sizes Product Model:WQ34 Product Name:PCIe 4.0 x4 to M.2 NVMe Quad Disk Expansion Card Product Use:For 1 to 4 M.2 NVMe SSD memory cards to PCIe x16 interface expansion Friendly reminder: There is a problem that this product is not compatible with other products and is only available to professional engineers who understand the PCIe split technology of motherboards. Ordinary buyers can not be used. System requirements: the motherboard must have a free PCIe x16 interface and support Bifurcation PCIe split function. Specifications:B:Without Heatsink Colour:As Shown Material:PCB Package Contents: 1 * Expansion Card 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.