1、COMPATIBILITY: Compliant with PCI Express basic specification 0 (5GTs) and backward compatible with specifications 1 and 0A. PCI Power Management Specification 2 2、SUPPORTED FUNCTIONS: Support 10/100/1000 automatic configuration. Supports exchange/polarity/skew correction, crossing detection and automatic correction. Support wake up on LAN and remote wake up 3、RELIABLE and STABLE: Support for Microsoft NDIS5, for NDIS6 checksum offloading (IPv4, IPv6, TCP, UDP) and segmentation tasks, offloading (mass delivery v1 and bulk delivery v2) 4、CONVENIENT and PRACTICAL: Support EMAC‑393ECMA ProxZzzy main body sleep standard. Supports full duplex flowing control (IEEE803X). Support jumbo frames 5、USE with CONFIDENCE: Fully according with IEEE 803, IEEE 803u standards, and IEEE 803ab standards. Support IEEE 802p layer 2 priority coding (priority sorting). Support IEEE 801Q VLAN tag (virtual local area network). Support IEEE 803az‑2010 (EEE) 6、SAFE and DURABLE: Support power off/drop out power saving/PHY disable mode. Support PCI message signal interrupt (MSI and MSI‑X). Support quad core receiver adjustment (RSS). Support protocol offloading function (ARP and Ns) 7、ECC and CRC: Supports 2 x 1 channel 5Gbps PCI Express buses. Support hardware ECC function. Support hardware cyclic redundancy check (CRC) function 1 x Internal Computer Networking Cards  1 x Driver CD1 x Baffle2 x Screw Item Type:Internal Computer Networking CardsMaterial: PCBMain Control Chip: RTL8111GBus Interface: PCIE (support PCIE X1 X4 X8 X16)Network Interface: RJ45 x4Transmission Rate: 10/100/1000MbpsProduct Size: (manual measurement allows errors)Length: Approx. 120mm/ 4.7inWidth: Approx. 120mm/ 4.7inHeight: Approx. 20mm/ 0.8inSupport System: For Win XP, for Win7, for Win8, for Win 8.1, for Win10, for Linux, Etc. 99% of the Operating Systems and Soft Routers on the Market, NAS, Virtualization, Etc.