Features: Brand new and high quality PCIE X16 slot shared into 4 PCIEX4 (physical slot for X16) Requires your motherboard to support changing the corresponding slot's PCIE working modes to X4X4X4X4. You need to set your motherboard before use, the corresponding slot PCIE connection speed to GEN3. Golden finger sinking process, increasing gold thickness to 5U, using high-density circuit board. Gold-plated track connectors with push buttons. With SATA power supply, add 4 solid capacitors. Supports installation of 4 PCIE cards, supporting graphics cards, passthrough cards, capture cards, computer cards, etc. Can be used with PCIE extension cable. Specifications: Material: PCB Size: Approx. 122x80 mm/4.8x3.15 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure you don't mind before ordering. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.