2.5Gbps PCIe Network Card – RTL8125B Gigabit Ethernet Adapter with 1m RJ45 Cable

Upgrade your desktop PC or workstation to high-speed 2.5 Gigabit Ethernet with this PCI Express network card. Powered by the Realtek RTL8125B chipset, it supports 10/100/1000/2500Mbps network speeds and is designed to provide a fast, stable wired connection for gaming, streaming, file transfers, home servers and professional networking.

Supplied with a 1 metre (39") RJ45 Ethernet patch cable, this kit provides a convenient solution for upgrading a compatible computer from standard Gigabit Ethernet to 2.5GbE networking.

⚡ KEY FEATURES

✔ Up to 2.5Gbps Ethernet Speed

Supports 10Mbps / 100Mbps / 1Gbps / 2.5Gbps network connections, automatically adapting to compatible network equipment.

✔ Realtek RTL8125B Chipset

Built around the widely used RTL8125B Ethernet controller for reliable 2.5 Gigabit network connectivity.

✔ PCI Express Interface

Designed for installation into a compatible PCIe x1 slot and supports the PCI Express 2.1 standard.

✔ Single RJ45 Ethernet Port

Features 1 × RJ45 LAN port for direct wired connection to your router, switch or other compatible network equipment.

✔ Full Duplex Support

Supports full-duplex operation and IEEE 802.3x flow control for efficient network communication.

✔ Auto MDI/MDIX

Automatically detects the required Ethernet connection type, simplifying network setup.

✔ Wake-on-LAN Support

Allows compatible systems to be remotely awakened through the network when correctly configured.

✔ PXE Support

Supports PXE network boot functionality, making the adapter useful for compatible business, server and network deployment environments.

✔ VLAN Support

Supports IEEE 802.1Q VLAN tagging and IEEE 802.1P Layer 2 priority encoding.

✔ Energy Efficient Ethernet

Supports IEEE 802.3az Energy Efficient Ethernet.

🚀 IDEAL FOR HIGH-SPEED NETWORKING

A great upgrade for:

Gaming PCs

Desktop computers

Workstations

Home servers

NAS connectivity

High-speed broadband

Large file transfers

HD & 4K streaming

Office networks

Network boot/PXE environments

2.5GbE routers and switches

📋 TECHNICAL SPECIFICATIONS

Specification Details

Model TXA092

Chipset RTL8125B

Network Port 1 × RJ45

Maximum Network Speed Up to 2.5Gbps

Supported Rates 10 / 100 / 1000 / 2500Mbps

Interface PCI Express x1

PCIe Standard PCI Express 2.1

PCIe Bus 1-Lane 2.5G / 5Gbps

Auto MDI/MDIX Yes

Full Duplex Yes

Wake-on-LAN Supported

PXE Network Boot Supported

VLAN Tagging IEEE 802.1Q

Flow Control IEEE 802.3x

Energy Efficient Ethernet IEEE 802.3az

2.5GBASE-T IEEE 802.3bz

LED Indicator 100M / 1G / 2.5G Link/Activity

Approx. Card Dimensions 71.5 × 50 × 1.6mm

MTBF 376,212 Hours stated

Operating Temperature 0°C to 55°C

Storage Temperature -10°C to 70°C

Relative Humidity 10%–90%, Non-Condensing

🌐 SUPPORTED NETWORK STANDARDS

Supports:

IEEE 802.3 • IEEE 802.3u • IEEE 802.3ab • IEEE 802.3az • IEEE 802.3bz • IEEE 802.1P • IEEE 802.1Q • IEEE 802.3x

Also supports 2.5G and 1G Lite Mode and compatibility with the stated NBASE-T PHY specification.

💻 OPERATING SYSTEM COMPATIBILITY

Stated compatibility includes:

Windows 10 – 32/64-bit

Windows 8 / 8.1 – 32/64-bit

Windows 7 – 32/64-bit

Windows Server 2012

Windows Server 2008

Linux

Mac OS*

Please Note: Driver availability and operating-system compatibility can vary by OS version and hardware configuration. Please verify driver support for your exact operating system before purchasing, particularly for newer Windows, Linux and macOS versions.

🔧 EASY PC NETWORK UPGRADE

Install the network card into a compatible PCI Express slot, secure it inside your computer and install the appropriate driver where required.

Connect the included RJ45 Ethernet cable between the card and a compatible router or network switch.

For full 2.5Gbps performance, your router/switch, Ethernet cabling and connected network equipment must also support 2.5GbE.

📦 PACKAGE INCLUDES

1 × 2.5Gbps PCIe Ethernet Network Card

1 × 1m / 39" RJ45 Ethernet Patch Cable

⚠️ IMPORTANT INFORMATION

2.5Gbps is the maximum stated network link rate, not a guaranteed internet download speed.

Achieving 2.5Gbps requires compatible 2.5GbE network equipment and suitable Ethernet cabling.

Actual network performance depends on your PC, network equipment, cabling, drivers and network conditions.

Please check that your motherboard has a compatible PCI Express slot before ordering.

Driver installation may be required.

Operating-system support can vary by driver version.

Turn off and disconnect your computer from power before installing internal PCIe hardware