Supports PCI 1.1. Supports 1-2.5Gbps PCI bus. Integrated 10 or 100 or 1000M transceiver. Backward compatible with 10 or 100BASE networks. Supports Giga Lite (500M) mode. Supports pair swap or polarity or skew correction. Crossover detection auto-correction. Supports hardware ECC (Error Correction Code) function. Supports hardware CRC (Cyclic Redundancy Check) function. Transmit or receive on-chip buffer support. Supports PCI (Message Signaled Interrupt) and -X. Fully compliant with IEEE802.3, 802.3u and 802. Supports IEEE 802.1P layer 2 Priority Encoding. Supports 802.1Q VLAN tagging. Supports IEEE 802.3az-2010(EEE). Supports Full Duplex flow control (IEEE.802.3x). Supports jumbo frame up to 9K bytes. Supports quad core Receive-Side Scaling(RSS). Supports Protocol Offload(NS). Supports ECMA-393 ProxZzzy Standard for sleeping hosts. System Requirements: Windows ME, 98SE, 2000, XP, Vista, 7, 8, 10 and 11 32- or 64-bit, Windows Server 2003, 2008, 2012 and 2016 32- or 64-bit, Linux, OS and DOS. Transfer Rate: 10 or 100 or 1000Mbps. Type: Wired. Interface Type: PCI. Adapter Socket: PCI-e. Applicable Network Type: Gigabit Ethernet. LAN Transmission Rate: 1000M Ethernet. Usage: Desktop. Chipset: RTL8111H. Port: 2 port PCI. Color: Black. Material: Plastic and Metal. Package Contents: 1 x PCIe to Gigabit Ethernet Controller Card, 1 x Low Profile Bracket, 1 x English Manual. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is 1-3cm.