PCIe Ethernet Card 2.5Gbps Base T Stable Transmission Full Half Duplex PCIe Network Adapter for PC Desktop Item Type: PCIe Ethernet Card Material: Printed Circuit Board Bus Type: PCI E Transmission Rate: 10/100/1000/2.5Gbps Data Rate Automatic Detection Full Duplex / Half Duplex: Full Duplex / Half Duplex Self Adaption Network Port Type: RJ45 Applicable Network Type: Fast Ethernet Applicable Model: Desktop Computer Main Chip: RTL8125 Network Standards: IEEE 802.1P, IEEE 802.1Q, IEEE 802.2, IEEE 802.3ac, IEEE 802.3az, IEEE 802.3x, IEEE 802.3z, IEEE 802.3ad Driver Support: Suitable for Win 10, 8.1, 8, 7, for Win Servers 2003, 2008, 2012, for Win ME, 98SE, 2000, XP, for Vista, for Linux, for OS X Laptop, for DOS. Product Size: Approx. 70 x 55mm / 2.8 x 2.2in ( Manual Measurement, Slight Error May Exist )