Expand network ports for devices: Inserting a PCIe network card into the PCI Express x1 slot adds an RJ45 port to the host computer. This is a good option for desktop computers with fewer network ports or network ports that cannot connect to a wired network Surfing at Full Speed: Using RTL8125B high-performance Chipset, Combined with the latest 2.5GBase-T Technology, delivers extreme speeds of up to 2.5 Gbps, 2.5x faster than typical Gigabit network card, securing smooth data transmissions for both internet access and local data transmissions. Note: The actual transmission speed is limited by the setting of the device connected Widely compatible:Supports the PXE function,RealWow Technology(Wake on Lan),DSM,PVE,ikuai,unraid6.9.2, OpenWrt ESXI6.7 (Doesn’t support ESXI 7.0). Additionally,supports multiple systems-Windows XP/7/8/10,Linux/DOS/support for Intel-based MacOS 10.7(and above) Unique cooling technology: Top is equipped with an aviation-grade alloy heat sink, With a groove design, which can effectively remove excess heat, and maintain the normal working temperature of the network card.Reducing the risk of hardware failure due to overheating Easy to Install: No external power adapter is required, the ethernet adapter has a built-in self-powered IC, and directly draws power from the motherboard PCI-E slot. In addition, to meet your different needs, we offer both standard (installed) and low-profile brackets for easy installation in standard PC/small computer chassis Product Highlights 1. It offers high-speed transmission over CAT5e UTP cable OR CAT3 UTP(10Mbps only)cable .it is suitable for multiple market segments and emerging applications, such as desktops/workstations/servers/communications platforms/embedded applications. 2. The 2.5GB network card combines a four-speed IEEE802.3 compatible Media Access controller with a four-speed Ethernet transceiver, it complies with the IEEE802.3u specification for 10/100Mbps Ethernet, the IEEE802.3ab specification for 1000Mbps Ethernet, and IEEE802.3bz specification for 2500Mbps Ethernet. 3. Secure, Reliable, and Stable: Stay connected to wired networks with the speed and reliability of Gigabit Ethernet. 4. LED Link Lights: Flashing link lights for status indication and diagnostics. Product Specifications Extend Ports:1* RJ45 LAN Host Interface: PCI Express (PCI-E 3.0/2.0) Chipset: RTL8125B pcie Ethernet card:Supports 10/100 / 1000Mbps/2.5G speed LED Indicator:100M/1G/2.5G Link/Act Compatible with NBASE-TTMAlliance PHY Specification Support Wake On LAN and ‘RealWoW!’ Technology (remote wake-up) Supports Full Duplex flow control (IEEE 802.3x) Supports jumbo frame to 16K byte Standard:IEEE 802.3、IEEE 802.3u、IEEE 802.3ab、IEEE 802.3az、IEEE 802.3bz Support OS: Windows 10(32/64), Win7 (32/64), Win8,8.1 (32/64), Windows Server,2012,2008, Linux,MAC OS 10.7 (and Above) Package Contents: 1 * 2.5gbase-t PCIe Network Card 2 * Screws 1* Low profile Bracket Note: 1. Don't install this network card when the computer is on. 2. Important Note: only work with a PCI-E slot, not for a PCI slot. 3. If you cannot get a wired connection: 1). Check if the ethernet adapter is detected in Device Manager. 2). If the ethernet adapter cannot be detected in the device manager, please test it on another computer.