Home > Ethernet Controller > 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux

4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux

SKU: NA2G4
$98.99 $0.00
  • Quad-Port 2.5Gbps - This network card features 4x 2.5 Gigabit ports, powered by the Realtek RTL8125B chip. It supports auto-negotiation for 1Gbps/100Mbps/10Mbps speeds and is compatible with standard Cat5e or higher UTP cables over distances up to 100m (328 feet).
  • PCIe Slot Compatibility - Compatible with PCIe X1, X4, X8, and X16 slots. It comes with a standard bracket and a low-profile bracket, supporting versatile installations in devices such as PCs, servers, workstations, and NAS. Note: Not compatible with PCI slots.
  • Multi-OS Support - Supports Windows 10/8.1/8/7/Server 2012/2008 and Linux. Drivers are easily downloadable via CD-ROM, user manual, the driver link provided on the bracket, or Binardat’s and Realtek’s official websites.
  • Network Features - Supports PXE, Auto MDIX, IEEE 802.1Q VLAN tagging, IEEE 802.3bz (2.5GBASE-T), full-duplex flow control (IEEE 802.3x), IEEE 802.1P Priority, and 16 KB jumbo frames.
  • Easy to Use - Select the suitable bracket based on your chassis size, insert it into the PCIe slot, install the driver, and connect to the network. LED indicators display link status and speed.
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  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
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  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • 4-Port 2.5Gbps PCIe Ethernet Adapter - RTL8125B Controller, RJ45 NIC (2500/1000/100Mbps) with PXE Support for Windows/Linux
  • Description
This quad-port 2.5Gbps PCIe network card adds four copper Ethernet ports to your server or desktop, delivering multi-gigabit Ethernet access to your network at four speeds: 2.5Gbps, 1Gbps, 100Mbps, and 10Mbps.
The 2.5GBASE-T solution unlocks additional bandwidth using your existing Ethernet infrastructure, helping reduce cabling upgrade costs. It enables seamless connectivity to 2.5GBASE-T and NBASE-T equipment at speeds of 10Mbps, 100Mbps, 1Gbps, and 2.5Gbps over Cat5e cabling (up to 100 meters, depending on network configuration).
Powered by the Realtek RTL8125 chipset—compliant with IEEE 802.3az and IEEE 802.3u—it supports the PCIe 2.1 interface. This chipset boosts data transfer rates by up to 250% without requiring modifications to your existing cable infrastructure.


Product Specifications

  • Multi-Gigabit Ethernet connectivity with four network speeds: 2.5G, 1G, 100Mbps, 10Mbps
  • Compatible with both 2.5GBASE-T and NBASE-T specifications
  • Support 2.5Gbps network speed on CAT5e and CAT6a cabling
  • Speed and Activity LED indicatorsFully Compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE
  • 802.3az and IEEE 802.3bz standards
  • Supports IEEE 802.1Q VLAN tagging, and IEEE 802.3x Fully Duplex Flow Control
  • Full and half duplex support
  • Transmit/Receive on-chip buffer support
  • Jumbo frame supports up to 16Kbytes
  • Complies with Microsoft and Linux platforms

Product Specifications

Model NA2G4
Bus Type PCI Express 2.1 (5 GT/s)
Bus Width x4 lane PCI Express, operable in x8 and x16 slots
Card Type Standard/Low Profile
Chipset ID ASMedia – ASM1812   Realtek – RTL8125BG
Industry Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3x, IEEE 802.3ab IEEE 802.3az, IEEE 802.3bz
Interface 4x RJ45
Power Consumption 2.5Gbps – 3.3W(3.3V/1A)
System and Cable Requirements PCI Express enabled computer with an available PCI Express x4 slot Gen 2.0 or higher (x4, x8, x16)
OS Compatibility Windows® 7, 8.x, 10, 11
Windows Server® 2008 R2, 2012, 2016 Linux 2.6.x to 5.x
Product Size 120mm x 142mm x 22mm
Product Weight 87 g
LED Indicators Act LED (Orange)
2.5G/1G Speed (Green)
Humidity 20~80% RH
Operating Temperature 5°C to 50°C (41°F to 122°F)
Storage Temperature -25°C to 70°C (-13°F to 158°F)
Included in Package Quad Port 2.5Gbps PCIe Network Card

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