Supports PCI 1.1. Supports 1-2.5Gbps PCI bus. Integrated 10/100/1000M transceiver. Backward compatible with 10/100BASE networks. Supports Giga Lite (500M) mode. Supports pair swap/polarity/skew correction. Crossover detection auto-correction. Supports hardware ECC (Error Correction Code) function. Supports hardware CRC (Cyclic Redundancy Check) function. Transmit/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-/64-bit, Windows Server 2003, 2008, 2012 and 2016 32-/64-bit, Linux, OS and DOS. Transfer Rate: 10/100/1000Mbps. 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 + 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.