Oculink is an interface ferred from the NVME solid-state drive slot of the computer motherboard. NVME uses a pure PCIe channel, so the Oculink external graphics card dock also uses a PCIe channel with little performance loss. Compared with the traditional fer solution, Oculink's effective bandwidth can reach 64Gbps in the case of PCIe 4.0 x4, far exceeding the solution. In addition to , this product also supports NUC motherboard, motherboard, ITX motherboard, external graphics card, with M.2 NVMe interface can be used. Product name:Oculink External Video Card Dock Product model:F9G-BK7 ferspeed:PCIe 4.0 x4, gen4, 64G/bps (Max.) Application: eGPU for NUC / ITX / / Notebook PC Friendly reminder: Oculink does not support swapping Product use: For external graphics cards or other PCIe devices Power supply description: Supports standard ATX 500W or above power supply, the buyer needs to prepare the power supply Note:due to different production batches, the printing of words is different, which does not affect the use. Color:Black Material:PCB+Metal Package Contents: 1 * PCIe 4.0 x4 GPU Dock 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.