???Gigabit NIC Card???PCIe gigabit network card allow desktop computers to upgrade to the latest Gigabit Ethernet through the PCIE X1 slot. Each port will automatically communicate with the router/switch/modem to adjust the Ethernet speed to 10/100/1000Mbps ???2x rj45 gigabit network???Dual Port Gigabit Ethernet card Adopt Intel 82575 main control chip, support intelligent offloading, support link aggregation/teaming support, enabling you to add extra bandwidth to your system and make the server more stable ???Wide Compatibility & Safety???Compatible with Windows XP/10/8.1/8/7,LINUX,NAS,and can be used with PCI Express X1,X4,X8,X16 slots.An additional half-height bracket makes it easy to install on a small computer or server. ???Aluminum alloy heat sink???The aluminum alloy heat sink with high thermal conductivity can effectively remove excess heat, prevent the chip from burning out after long-term use, make the network card run stably and prolong its service life ???Note???1- If the driver cannot be installed automatically after inserting this card, please scan the QR code on the back of the network card or log in to Intel???s official website to download. 2- Do not insert this card when the PC is on. 3- Do not put this PCIE NIC card in PCI slo