Description:Features: brand new and high quality Enlarged heat sink provides better heat dissipation effect and is more suitable for long-time work. The rear 8 SATA3.0 interface design makes the wiring more convenient. It wears 4U and 2U dual fixed brackets, and the large and small chassis are universal, and it will not for cross the graphics card. The tail is flush-edge design, the chance of blocking the graphics card fan is smaller. Four-layer circuit board, with an isolation layer in the middle, has for stronger anti-interference ability. Under PCI-E2.0 version, the single port speed can reach about 400N. Using thick gold fingers, the contact is more reliable, and it is not prone to packet loss and distortion. It can easily achieve ten thousand insertions and unplugging. It is suitable for PCI-E X4, X8, and X16 slots. Specifications: Material:PCB Size:Approx.6.8x10.2x12x8cm/2.68x4.01x4.72x3.15inches Color:Green Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Expansion Card