The Realtek RTL8125 chipset, compliant with IEEE 802.3az and IEEE 802.3u supports the PCIe 2.1 interface. It provides up to a 250% increase in data rate and requires no changes to existing cable infrastructure.
Compatible with the IEEE 802.3u specification for 10/100Mbps Ethernet, the IEEE 802.3ab specification for 1000Mbps Ethernet and the IEEE 802.3bz specification for 2500Mbps Ethernet. It supports an auxiliary power auto-detect function and will auto-configure related bits of the PCI power management registers in PCI configuration space.
This Quad port 2.5Gbps PCIe network card adds four copper Ethernet port to your Server or Desktop computer and provides Multi-Gigabit Ethernet access to your network at four speeds: 2.5bps, 1G, 100Mbps and 10Mbps.
Support Wake-On-LAN and RealWow Technology (remote wake-up), remotely power on/off your computer with WOL, good for centralized management
It is also available via CAT5e UTP cable or CAT3 UTP (10Mbps only) cable to provide high speed transmission. It is suitable for multiple market segments and emerging applications, such as desktops, workstations, servers, communication platforms and embedded applications
+
+
Overview
Specs
Reviews
The Realtek RTL8125 chipset, compliant with IEEE 802.3az and IEEE 802.3u supports the PCIe 2.1 interface. It provides up to a 250% increase in data rate and requires no changes to existing cable infrastructure.
Compatible with the IEEE 802.3u specification for 10/100Mbps Ethernet, the IEEE 802.3ab specification for 1000Mbps Ethernet and the IEEE 802.3bz specification for 2500Mbps Ethernet. It supports an auxiliary power auto-detect function and will auto-configure related bits of the PCI power management registers in PCI configuration space.
This Quad port 2.5Gbps PCIe network card adds four copper Ethernet port to your Server or Desktop computer and provides Multi-Gigabit Ethernet access to your network at four speeds: 2.5bps, 1G, 100Mbps and 10Mbps.
Support Wake-On-LAN and RealWow Technology (remote wake-up), remotely power on/off your computer with WOL, good for centralized management
It is also available via CAT5e UTP cable or CAT3 UTP (10Mbps only) cable to provide high speed transmission. It is suitable for multiple market segments and emerging applications, such as desktops, workstations, servers, communication platforms and embedded applications
Learn more about the Detailed Specifications
Additional Information
First Listed on Newegg
October 14, 2026
There are no reviews yet.
Do you own this product?
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.