Features: brand new and high quality With dual Gigabit SFP interface, the outside adopts fully shielded gold-plated interface, which effectively reduces contact resistance and improves signal interference prevention Using high-performance main control chip, intel350 makes data transmission faster, reduces network conflicts, and improves network bandwidth Gold-plated connector and motherboard socket link to ensure the integrity of data transmission and stable operation With aluminum alloy heat sink, strong heat dissipation ability, long-term work will not affect the speed due to heat Only need the motherboard to have a PCI-E X 4/X8/X16 slot, you can easily expand, plug and for play, convenient and fast Specifications: Model: PCI-E optical fiber network card Item No.: PCIE Dual-port Gigabit Optical Fiber Network Card Transmission Rate: 10/100/1000Mbps Bus type: PCI-E Size: approx 120x132x68mm/4.72x5.20x2.68in Support System: for Win10,Win8/8.1/7/XP Vista etc Applicable Slots: PCI-E X4 / X8 / X16 Applicable Network Type: Ethernet Transmission Medium: Optical Fiber Port Type: 2x SFP Product Weight: 100g Package Includes: 1 x Ethernet Converged Network Adapter 1 x Low Profile Bracket 1 x Standard High Profile Bracket 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.