Features: brand new and high quality Add large radiator, heat dissipation effect is better. Rear four mouth design, wiring is more convenient. Rear four-port design, the size of the chassis universal. Tail flush design, the probability of blocking the best video card fan is less. Four layers of circuit board, with isolation layer in the middle, for stronger anti-interference ability. Original mode selection,AHCL,IDE, data disk, three modes can be freely selected. The three modes can be selected by pulling the switch.1. Hard disks boot the system in AHQ mode.2. Data disk mode Hard disk does not boot (at the same for time, you can close the self-check interface).3. Hard disk boots the system in IDE mode. Specifications: Transmission rate: 6Gbps Bus type: PCI-E X1 is for PCI-EX4 X8 X16 and other interfaces Bus speed: PCI-E3.0 Interface: standard SATA3.0 Number of ports: 4 Installation conditions: There must be one or more free PCI-E slots on the motherboard Operating temperature: -10~60 degrees Storage temperature: -20 °C to -40 °C Application: Desktop computer, workstation, server, industrial equipment Driver support: for Windows Package Includes: 1PC x PCIE to Sata Card 4PCS x Cable note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.