Features: brand new and high quality Adopts high thermal conductivity alloy heat sink and fan can efficiently dissipate the heat generated by the expansion card and make the expansion card work more stable. As long as the motherboard has a PCI for Express x16 slot, it can be easily expanded. Plug and for play, convenient and fast. System Support: for Windows(R) XP/Server 2003/Vista/7 /8(32/64 bit) /for Mac/Linux The gold finger is gold-plated and connected to the motherboard SATA slot to ensure data transmission integrity and stable operation. Specifications: Material:PCB Size:16.8x12x9.2cm/6.61x4.72x3.62in Slot: PCI-E X16 Interface:20 Ports SATA3.0 Port Bus Bandwidth:32Gb/s Working Temperature: 0℃-70 ℃ Package Includes: 1x 20 Port SATA PCI-E Adapter note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!