🚀 Professional 2-Port 2.5G Network Card
RTL8125B Chipset | Dual RJ45 Ports | PCIe x1 Interface
📋 Technical Specifications
| Model | IO-PCE8125E-2GLAN |
| Chipset | RTL8125B |
| Input Interface | PCIe x1 |
| Output Interface | 2 × RJ45 |
| Transmission Rate | 2.5Gbps |
| Bus Type | PCIe x1, x4, x8, x16 |
| Product Size | 65.3 × 75mm |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -10°C to 80°C |
| System Compatibility | Windows, Linux, Mac OS |
✨ Key Features
- 2.5G Lite mode support
- Dual 2.5-Gigabit LAN ports
- Auto-Negotiation with XNP
- Hardware ECC & CRC functions
- MSI and MSI-X support
- On-chip buffer support
- Power saving modes
- PCIe L1.1 & L1.2 support
- Energy Efficient Ethernet
- Crossover Auto-Correction
- Pair swap/polarity correction
- Jumbo frame up to 16K
📡 Standards Compliance
💼 Applications
Ideal for network expansion in servers, NAS storage systems, workstations, and desktop computers requiring high-speed, reliable dual-port Ethernet connectivity.
Perfect for virtualization environments, network aggregation, and bandwidth-intensive applications.
📦 Package Contents
- ✅ 1 × PCI-Express 2.5G Network Card
- ✅ 1 × Low Profile Bracket
- ✅ 1 × User Manual
❓ Frequently Asked Questions
🔌 Which PCIe slot should I use for this card?
This card is designed for PCIe x1 slots but is also compatible with x4, x8, and x16 slots. For optimal performance, use any available PCIe slot on your motherboard. The card will work in larger slots without any issues.
💻 Do I need to install drivers?
Yes, for optimal performance, we recommend installing the official RTL8125B drivers. You can download them using the button at the top of this page.
🌐 Can I use both ports simultaneously?
Absolutely! Both RJ45 ports can be used at the same time. This is perfect for network aggregation, link redundancy, or connecting to multiple networks simultaneously. Each port operates independently at up to 2.5Gbps.
⚡ Will this work with my 1Gbps network?
Yes! The card is backward compatible with 10/100/1000Mbps networks. It will auto-negotiate to match your network speed. When you upgrade your network infrastructure to 2.5G, the card will automatically take advantage of the higher speeds.
🖥️ Is this compatible with my operating system?
The RTL8125B chipset is widely supported across Windows (7/8/10/11), Linux (kernel 5.9+), Mac OS, and even DOS. Check the driver download package for specific version compatibility.
📏 Will this fit in my small form factor (SFF) case?
Yes! The package includes a low-profile bracket, making it compatible with both standard and small form factor cases. Simply swap the bracket before installation.
🔥 Does this card require additional power?
No external power required! The card draws all necessary power from the PCIe slot itself. It's also energy-efficient with support for IEEE 802.3az (Energy Efficient Ethernet) and multiple power-saving modes.
🛠️ Can I use this for link aggregation (bonding)?
Yes! The dual ports support various bonding modes including load balancing, failover, and aggregation (LACP/802.3ad). This requires compatible network switch support and proper OS configuration.
📶 What cables do I need?
For 2.5G speeds, we recommend Cat5e or higher Ethernet cables (Cat6/Cat6a preferred). Standard Cat5e cables can support 2.5Gbps for distances up to 100 meters. Cables are not included with the card.
ℹ️ System Requirements: Windows, Linux, Mac OS, or DOS operating system with available PCIe slot (x1, x4, x8, or x16). Compatible with standard or low-profile chassis.