1、NIC Controller: Based on for Realtek RTL8111H chipset, supports Single Root I/O virtualization and improves server stability. 2、4 RJ45 Ports: RJ45 port (10/100/1000Mbps) to connect Cat5 UTP Cat3 UTP. PCIe x1 Lane, compatible with PCIE X4, X8, X16 slots. 3、Supported Operating Systems: The PCI Express Ethernet LAN adapter supports for Windows Server for Linux for VMware. 4、Easy Installation: Includes thin and full height brackets for standard and ultra thin computer servers for easy installation. 5、Premium Materials: Made of PCB, it is strong, durable, not easy to damage, and has a long service life. 1 x PCIE NIC Network Card1 x Screw1 x Metal Baffle Item Type: PCIE NIC Network CardMaterial: PCBMain Control Chip: RTL8111HBus Interface: Desktop PCIE X1 Slot, Compatible with X4 X8 X16Network Interface: 4 x Ethernet PortTransmission Rate: 10/100/1000 MbpsSpecifications Compliant: Pci Express Base Specification 2.0 (5gts) and Backward Compatible with Specifications 1.1 and 1.0A, Pci Power Management Specification 1.210/100/1000 Auto Configuration: SupportSwap Polarity Skew Correction, Crossing Detection and Auto Correction: SupportWake on Lan and Remote Wake: SupportNdis5, Ndis6 Checksum Offload (ipv4, Ipv6, Tcp, Udp) and Split Task, Offload (bulk Transfer V1 and Bulk Transfer V2): SupportEMAC 393 ECMA ProxZzzy Host Sleep Standard: SupportFull Duplex Flowing Control (ieee 802.3x): Support9k Bytes Jumbo Frame: SupportCompliant with Standards: Ieee 802.3, Ieee 802.3u Standard, Ieee 802.3abIeee 802.1p Layer 2 Priority Coding (prioritization): SupportIeee 802.1q Vlan Tagging (virtual Local Area Network): SupportIeee 802.3az 2010 (eee): SupportPower Down Drop Power Save PHY Disable Mode: SupportPci Message Signaled Interrupt (msi and Msi x): SupportQuad Core Receiver Regulation (rss): SupportProtocol Offload Function (ARP NS): SupportTwo 1 Lane 2.5gbps Pci Express Buses: SupportECC Function: SupportHardware Cyclic Redundancy Check (crc) Function: Support