1、For REALTEK system chipset with better compatibility, conforms to PCI‑Express basic specification 0 (5GTs) and backward compatible with specifications 1 and 0A. 2、PCI‑Express rate of 5/s full‑duplex channel supports 10 / 100 / 1000MBPS network automatic configuration. 3、Support exchange / polarity / skew correction, cross detection and automatic correction and support wake up LAN and remote wake up. 4、For Microsoft NDIS5 / NDIS6 checksum offload (IPv4, IPv6, UDP) and split tasks, offload (mass transfer v1 and mass transfer v2). 5、And supports EMAC‑393 ECMA ProxZzzy host sleep standard and support full duplex flow control (IEEE 803X), support single port 9K byte jumbo frame. 6、Completely in line with IEEE801P, IEEE801Q, IEEE803 10Base‑T IEEE803u 100Base‑TX, IEEE803ab 1000Base‑T standards. 7、Network card supports high‑performance, low‑processor PCI‑E data bus and supports 10/100Mbps full‑duplex/half‑duplex mode and 1000Mbps full‑duplex mode. 8、Automatically detect full‑duplex/half‑duplex mode and automatically match the network speed, support auto‑negotiation technology. 9、Also, such network card supports for jumbo frame of gigabit transmission and reception. 10、Support IEEE 801Q VLAN tag of virtual local area network, support IEEE 803az ‑2010 of EEE and supports power‑off / power down saving /PHY disable mode. 11、Mooreover, server network card supports PCI message signal interrupt for MSI / MSI‑X), support quad‑core receiver adjustment for RSS, support protocol offload function (ARP & NS), support hardware error correction codes for ECC function. And plug and play, supports hardware cyclic redundancy check (CRC) function 1 x Network Card1 x Short Bezel1 x Compact Disk Item Type: 4-Port network card Chipset: For Realtek 8111FConnector: Quad RJ-45 copperWiring: Category 5, unshielded twisted pair (UTP)Bus Type: PCI Express 2.1Supported Data Rates Per Port: 10, 100 and 1,000-MbpsIEEE Standard/Network Topology: 10BASE-T, 100BASE-TX, 1000BASE-TApplicable Network Type: Gigabit EthernetApplication Field: Server/desktopLED: 8 (1/port, link and speed) steady and flashingOperating System: For Windows XP / Windows 7 SP1 / Windows 8 / Windows 8.1 / LINUX