Supports PCI Express revision 2.0 Support 2.5G and 1G Lite mode Supports PCI Express x4, x8 or x16 socket Integrated MAC/PHY supporting 10BASE-Te, 100BASE-TX, 1000BASE-T and 2500BASE-T 802.3 specifications IEEE 802.3u auto-negotiation conformance Half duplex operation at 10BASE-Te and 100BASE-TX Automatic polarity correction Error correcting memory (ECC) in packet buffers Flow control support: send/receive PAUSE frames and receive FIFO Supports PXE Support Wake on LAN ,Only the first port (upper left corner) supports Wake-On-LAN (Wake-On-LAN) Interrupt moderation, VLAN (802.1Q & 802.1P), TCP/IP checksum offload, segmentation offload Time Sensitive Network (TSN): IEEE 1588/ 802.AS Rev, 802.1Qav, 802.1Qbv Supports Interrupt moderation, VLAN (802.1Q & 802.1P), TCP/IP checksum offload, segmentation offload Supports IEEE 802.3,IEEE 802.3u,IEEE 802.3ab,IEEE 802.3az,IEEE 802.3bz Supports IEEE802.3az(Energy Efficient Ethernet) Supports IEEE802.3bz(2.5GBASE-T) Supports Full Duplex flow control(IEEE 802 .3x) Supports Size of jumbo frames 9.5 KB and without TSN type: B Colour:As Shown Material:PC+metal Package Contents: 1 x PCI-Express to 10 /100/1000M/2.5G Ethernet Card(for Lenovo) 1 x Low-profile bracket 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.