Transmission speed: PCIe4.0 x16 full speed, 256G/ (maximum). Application: PCIe 4.0 x16 graphics card to PCIe x16 slot extension cable. Adaptable graphics card: Supports all PCIe 4.0 graphics cards in the past three years. Segmented cable design allows for better airflow. Support PCIE 4.0/3.0/2.0/1.0 (graphics card 4.0 can reach up to 256G/).Works with most GPU/motherboard components and works in most situations. Specification: Product name: PCIe 4.0 x16 extension cable Process: pure copper tin plating degree: 90 degrees Wire length: . 15cm Transmission speed: PCIe 4.0 x16 full speed, 256G/ (maximum) Application: PCIe 4.0 x16 graphics card to PCIe x16 slot extension cable Material: abs colour: black Package Contents: 1 x Graphics card extension cable 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.