Compliant with PCI Express base specification 2.0 (5GT/s) and backward compatible with specifications 1.1 and 1.0A PCI Power Management Specification 1.2 Supports 10/100/1000 auto-negotiation Supports polarity correction, skew compensation, crossover detection and auto-correction Supports wake-on-LAN and remote wake-up Supports Microsoft NDIS5, NDIS6 checksum offload (IPv4, IPv6, TCP, UDP) and segmentation offload (large send v1 and large send v2) Supports full-duplex flow control (IEEE 802.3X) Supports 9K byte jumbo frames Fully compliant with IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab standards Supports IEEE 802.1p Layer 2 priority encoding (priority queuing) Supports IEEE 802.1Q VLAN tagging (Virtual Local Area Network) Supports IEEE 802.3az-2010 (Energy Efficient Ethernet) Supports power-saving modes including PHY power-down and link standby Supports PCI Message Signaled Interrupts (MSI and MSI-X) Supports Receive Side Scaling (RSS) Supports protocol offload functions (ARP & NS) Supports two 1-lane 2.5Gbps PCI Express buses Supports hardware Error Correction Code (ECC) functionality Supports hardware Cyclic Redundancy Check (CRC) functionality Compatible operating systems: Windows ME, 98SE, 2000, XP, Vista, Win7, Win8, Win10 (32-/64-bit) Windows Server 2003, 2008, and 2012 (32-/64-bit) Linux, DOS, FreeBSD, macOS Color: As shown Material: Metal + Plastic Package Contents: 1 x 4-Port Gigabit Ethernet Network Card 1 x Low-Profile Bracket