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 offloading (IPv4, IPv6, TCP, UDP) and segmentation offloading (Large Send Offload v1 and v2) Supports full duplex flow control (IEEE 802.3X) Supports 9KB 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 power-off, low-power idle, and PHY disable Supports PCI Message Signaled Interrupts (MSI and MSI-X) Supports Receive Side Scaling (RSS) for multi-core processors Supports protocol offloading 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, Windows 7, Windows 8, Windows 10 (32-bit and 64-bit) Windows Server 2003, 2008, and 2012 (32-bit and 64-bit) Linux, macOS, FreeBSD Color: As shown Material: Metal + Plastic Package Contents: 1 x 4-Port Gigabit Ethernet Network Card 1 x Low-Profile Bracket