Features: Power Supply: PCl-E slot power solution, no for extra power cable needed. More stable without the interference from outside for insufficient power. Work Efficiency: Ruduce quantity of converters and extender cables. Plug directly to the slot by only one cable, can be fixed to the for case, effectively reducing intertace interference and wire loss to ensure data reliability and improve productivity. 4 Interfaces: Effective solution to the insufficient motherboard PCI-E interface. 4 interfaces can be extended by one. 4 Operating Systems Supported: Linux, for Windows XP / 7/8/10. Suitable for motherboards with PCIE slots, plug & for play.If you insert a PCI-E card, you must first switch off the power supply. Specifications: Material: Metal+PCB Color: As the Picture Shown Size: Approx. 15x13cm/ 5.9x5.11in Note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size. Package includes: 1x PCIE Riser Card