Compliant with PCI Express Specification Revision 3. 1 (5. 0GT/s) MDI (copper) standard IEEE802. 3 Ethernet interface, 2. 5Gb/s Compliant with dual-port 2. 5GbE RJ45 ports (copper) Comply with MDI standard IEEE802. 3 for 2500BASE-T, 1000BASE-T, 100BASE-TX, 10BASE-TE applications Ethernet interface (IEEE802. 3bz, IEEE802. 3ab, IEEE802. 3u and IEEE802. 3) Specifications Main controller: (R) I226-V Bus type: PCI Express X4, 2. 5GT/s Media interface: 2 x RJ45 copper cable Transmission rate: 10/100/1000/2500Mbps Operating system: Microsoft Windows 10 32/64bit Working temperature: 0 ~ 55 ℃ (32 ~ 131℉) Storage temperature: -40 ~ 70 ℃ (-40 ~ 158 ℉) Colour:As Shown Material:PCB Package Contents: 1 * network card 2 * accessories 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.