Features: brand new and high quality Suitable for motherboard pci-express card, plug and for play. A perfect solution for expanding PCI-e support in tight systems or on motherboards with limited or minimal PCI-e ports,an interface can be expanded to 4. The plug-in card design can be connected directly to the motherboard interface without an extension cable, and it can be connected to the chassis, which significantly improves stability and reliability. The main control board adopts pci-e interface direct power supply mode, and does not require an external power cable. 4 Slots brings great extendability, good electrical conductivity, improve data transmission efficiency. Specifications: Material: Metal Color: Black Bus interface: PCI-E X1 (for X4, X8, X16 graphical interface) Product interface: PCI-E X1 interface x 4 Size: approx. 65x55mm/2.56x2.17in Type: Full Height /Half Height Baffle (Optional) Supported Systems: Linux / XP / for Windows 7/8 / 8.1 / 10. Package Includes: 1PC x PCI for Express Card 1PC x Baffle note: There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.