Main control chip: RTL8111G*2 Bus interface: PCI-E (support PCI-EX1 X4 X8 X16) Network interface: RJ-45*2 Transmission speed: 10/100/1000Mbps Support system: XP WIN7 WIN8 WIN8.1 WIN10, LINUX and other 99% operating systems on the market and soft routing, NAS, virtualization and other special applications.Compliant with PCI Express Base Specification 2.0 (5GTs) and backward compatible with Specifications 1.1 and 1.0A PCI Power Management Specification 1.2 Support 10/100/1000 automatic configuration Support for swap/polarity/skew correction, detection and automatic correction Support wake-on-lan and remote Supports NDIS5, NDIS6 checksum offload (IPv4, IPv6, TCP, UDP) and split tasks offload (bulk transfer v1 and bulk transfer v2) Support for EMAC-393 ECMA ProxZzzy host sleep standard Support full-duplex flow control (IEEE 802.3X) Jumbo frame support Fully complies with IEEE 802.3, IEEE802.3u standard, IEEE802. standard Support IEEE 802.1p layer 2 priority bias code (priority sorting) Support IEEE802.1Q VLAN tagging (virtual local area network) Support IEEE802.3az-2010 (EEE) Support power-down/drop-down power-saving/PHY disable mode Support for PCI Message Signaled Interrupts ( and -X) Supports -core receiver scaling (RSS) Support protocol offload function (&NS) Support two 1-channel 2.5Gbps PCI Express buses Support hardware error correction code (ECC) function Support hardware cyclic redundancy check (ECC) function Different batches, the product appearance will be different, does not affect the use Colour:random color , 't accept the specified color Material:PCB Size:7.9 x 6.6cm Package Contents: 1 x Server NIC 1 x Low Profile Bracket 1 x Standard High le 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.