Supports 2.5G Lite (1G data rate) mode PCI-Express 1-Lane(x1) interface Supports PCI Express 2.1 Supports 2 high performance 2.5-Gigabit LAN ports Auto-Negotiation with Extended Next Page capability (XNP). Compatible with NBASE-TTM Alliance PHY Specification Supports pair swap/polarity/skew correction Crossover Detection & Auto-Correction Supports 1-Lane 2.5/5Gbps PCI Express Bus Supports hardware ECC (Error Correction Code) function Supports hardware CRC (Cyclic Redundancy Check) function Transmit/Receive on-chip buffer support Supports PCI MSI (Message Signaled Interrupt) and MSI-X Supports power down/link down power saving/PHY disable mode Supports ECMA-393 ProxZzzy Standard for sleeping hosts Supports LTR (Latency Tolerance Reporting) Supports PCIe L1 substate L1.1and L1.2 Compatible with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab Supports IEEE 1588v1, IEEE 1588v2, IEEE 802.1AS time synchronization Supports IEEE 802.1Qav credit-based shaper algorithm Supports IEEE 802.1P Layer 2 Priority Encoding Supports IEEE 802.1Q VLAN tagging Supports IEEE 802.1ad Double VLAN Supports IEEE 802.3az (Energy Efficient Ethernet) Supports IEEE 802.3bz (2.5GBase-T) Supports Full Duplex flow control (IEEE 802.3x) Supports jumbo frame to 16K byte Supports standard and low profile chassis System Requirements: Windows OS Linux, MAC OS and DOS PCI Express-enabled system with an available PCI Express slot Colour:Black Material:Plastic+Metal Package Contents: 1 * Network Card Adapter 1 * Baffle 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.