Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Binardat 4-Port 2.5G PCIe Network Card. This adapter is designed to upgrade your PC to a 2.5 Gigabit Ethernet connection, offering enhanced network performance for various applications. Please read this manual thoroughly before installation and use to ensure proper functionality and longevity of the product.
Product Overview
The Binardat 4-Port 2.5G PCIe Network Card features a Realtek RTL8125B controller, providing four 2.5 Gigabit Ethernet ports. It is compatible with various network speeds including 2500Mbps, 1000Mbps, 100Mbps, and 10Mbps, automatically negotiating the highest possible speed. The card supports standard Cat5e or higher UTP cables for distances up to 100 meters (328 feet).

Image: Binardat 4-Port 2.5G PCIe Network Card with its main features such as 2.5Gbps networking, Realtek RTL8125BG chipset, and compatibility details.
Key features include:
- Quad 2.5Gbps Ports: Equipped with a Realtek RTL8125B chip, supporting 2500/1000/100/10Mbps auto-negotiation.
- PCIe Compatibility: Designed for PCIe x4, x8, and x16 slots. Includes both standard and low-profile brackets for versatile installation in various PC, server, workstation, or NAS chassis. Note: Not compatible with PCI slots.
- Broad OS Support: Compatible with Windows 10/8.1/8/7/Server 2012/2008, and Linux (kernel 3.10 and higher).
- Advanced Network Features: Supports PXE boot, Auto MDIX, IEEE 802.1Q VLAN, IEEE 802.3bz (2.5GBASE-T), Full Duplex flow control (IEEE 802.3x), IEEE 802.1P Priority, and Jumbo frames up to 16Kbytes.
- Quality Construction: Features thickened golden fingers for reliable contact, shielded gold-plating on RJ45 ports for improved signal integrity, and a large heat sink for efficient thermal management.

Image: Detailed views of the Binardat network card highlighting its robust design elements such as thickened golden fingers, shielded RJ45 ports, and the integrated heat sink.
Specifications
| Brand | Binardat |
| Model Number | NA2G4 |
| Hardware Interface | PCI Express x4 |
| Compatible Devices | Desktop PCs, Servers, Workstations, NAS |
| Data Link Protocol | Ethernet, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3, IEEE 802.3bz |
| Data Transfer Rate | 2500 Megabits Per Second (2.5Gbps) |
| Chipset | Realtek RTL8125B |
| Ports | 4 x RJ45 |
| Jumbo Frame Support | Up to 16Kbytes |
| Item Weight | 0.21 Kilograms |
Setup and Installation
1. Physical Installation
- Prepare your system: Power off your computer and disconnect all cables. Open the computer case.
- Select a PCIe slot: Locate an available PCIe x4, x8, or x16 slot on your motherboard. This card is not compatible with standard PCI slots.
- Choose the correct bracket: The card comes with a standard bracket installed. If your computer case requires a low-profile bracket, remove the two screws holding the standard bracket and replace it with the included low-profile bracket. Secure it with the screws.
- Insert the network card: Carefully align the network card with the chosen PCIe slot and press it firmly until it is securely seated. Secure the card with the screw or latch mechanism of your computer case.
- Close the case: Reassemble your computer case and reconnect all cables.

Image: The Binardat network card illustrating the standard and low-profile brackets for different chassis types.
2. Driver Installation
After physical installation, you will need to install the appropriate drivers for your operating system.
- Power on your computer: Boot your system. For Windows operating systems, the card may be recognized automatically, and a basic driver might be installed.
- Download drivers: For optimal performance and full feature support, it is recommended to download the latest drivers from the Binardat official website or the Realtek official website. A driver link may also be provided on the product bracket or packaging.
- Install drivers: Follow the on-screen instructions to install the downloaded drivers. A system restart may be required after installation.

Image: A computer display showing logos for Windows and Linux, representing the broad operating system compatibility of the network card.
Operating Instructions
1. Connecting to the Network
- Once the drivers are installed, connect your Ethernet cables (Cat5e or higher recommended) to the RJ45 ports on the network card and to your network devices (router, switch, modem, etc.).
- Observe the LED indicators on the network card. These LEDs typically show link status and network activity. A solid light usually indicates a successful link, while a blinking light indicates data transfer.
2. Configuring Network Settings
Most operating systems will automatically configure the network settings. However, you may need to manually adjust settings for specific network environments or to enable advanced features.
- Speed & Duplex: In Device Manager (Windows) or network settings (Linux), you can verify or manually set the link speed and duplex mode. For 2.5Gbps operation, ensure it is set to "Auto Negotiation" or "2.5Gbps Full Duplex".
- Jumbo Frames: If your network infrastructure supports it, enabling Jumbo Frames (e.g., 9KB or 16KB) can improve performance for large data transfers. This setting is usually found in the advanced properties of the network adapter.
- QoS (Quality of Service): The card supports QoS features to prioritize network traffic, which can be beneficial for applications like online gaming or video conferencing. Configuration depends on your operating system and network management tools.

Image: A visual representation of Quality-of-Service (QoS) technology prioritizing gaming traffic over other network activities like web browsing or file transfers.
Maintenance
The Binardat 4-Port 2.5G PCIe Network Card is designed for reliable operation with minimal maintenance. Follow these guidelines to ensure its longevity:
- Keep it clean: Periodically clean the interior of your computer case to prevent dust buildup on the network card's components, especially the heat sink. Use compressed air for this purpose.
- Driver updates: Regularly check the Binardat or Realtek official websites for updated drivers. Keeping your drivers current can improve performance, stability, and compatibility.
- Environmental conditions: Ensure your computer operates in a well-ventilated area to prevent overheating, which can affect the performance and lifespan of internal components.
Troubleshooting
If you encounter issues with your network card, refer to the following troubleshooting steps:
- No Link Light / Card Not Detected:
- Ensure the card is fully seated in the PCIe slot.
- Try the card in a different PCIe slot if available.
- Verify that the correct drivers are installed. Reinstalling drivers can resolve detection issues.
- Check your motherboard's BIOS/UEFI settings to ensure the PCIe slot is enabled.
- Slow Network Speeds:
- Confirm that your router/switch and Ethernet cables (Cat5e or higher) support 2.5Gbps speeds.
- Check the network adapter settings in your operating system to ensure it's set to "Auto Negotiation" or "2.5Gbps Full Duplex". Sometimes, Windows may default to 1.0Gbps.
- Update to the latest drivers from Realtek or Binardat.
- If Jumbo Frames are enabled, ensure your router/switch also supports them. Disabling Jumbo Frames can sometimes resolve speed issues if there's a compatibility conflict.
- Disable any onboard Ethernet adapters if they are causing conflicts, especially during boot-up.
- Operating System Compatibility Issues:
- While the card supports Windows and Linux, some specialized operating systems (e.g., certain BSD-based systems like PFSense) may not have native driver support. Verify OS compatibility before purchase if using non-standard systems.
- For Linux, ensure your kernel version is 3.10 or higher.
Support
For any questions, technical assistance, or support regarding your Binardat 4-Port 2.5G PCIe Network Card, please contact our customer support team. Refer to the contact information provided with your product packaging or on the official Binardat website for the most current support options.