Features: Functional features: support fullduplex flow control, crossdetection and Autocorrection Support for WoWremote wake-up operating system: WindowsXP/10/8.1/8/7/Vista2003-2008 32/64-bit Convert PCIE to 2.5Gb networkcard, and convert the desktop graphics card PCIe slot into 2Rj45 2.5Gb networkcard interfaces AdoptingRealtek chips, supporting 10/100/1000Mbps/2.5Gbpsspeeds With 8CM half height short baffle, can be used in various occasions such aspersonal computers, consumer electronics, and industrial communication. Plug and play, no additional power require Specifications: Product Name: PCIE to 2.5Gb NetworkCard Interface master Chip: RTL8125 PCIE interface: RJ45 2.5Gb network port x2 External interface: PCIExpressx1 interface, can be used for x1 x4 x8 X16 different lengths of pcie slots Transmission rate: 10/100/1000Mbps/2.5Gbps Power supply method: adaptive bus power supply Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1PC PCIE to 2.5Gb NetworkCard