Lekuo Dual-Port Gigabit Ethernet PCIe Network Adapter
Intel 82576 Chipset - Enterprise-Grade Performance for Servers and Workstations
Driver & Software Download
Supported Operating Systems:
Windows | Linux | VMware ESXi | Proxmox VE | FreeBSD | pfSense
SPEED
1000 Mbps
PORTS
RJ45 × 2
INTERFACE
PCI-E x1
POWER
2.8W
Key Features & Benefits
✓ Intel 82576 Gigabit Ethernet Controller – Industry-leading reliability and performance
✓ Dual RJ45 Ports – Link aggregation, failover, and load balancing support
✓ Advanced Virtualization Support – SR-IOV and VMDq for ESXi and Proxmox
✓ Universal PCIe Compatibility – Works in x1, x4, x8, x16 slots
✓ Low Power Consumption – Only 2.8W for energy-efficient 24/7 operation
Product Parameters
| Brand | Lekuo |
| Product Name | PCIe x1 to 2 Port Gigabit Network Card |
| Model | PI76R21 |
| Chipset ⭐ | Intel 82576 |
| Interface Type | PCI-E x1 |
| Network Ports | RJ45 × 2 |
| Bus Type | PCIe x1 (compatible with x4, x8, x16) |
| Data Transfer | 10/100/1000 Mbps Auto-Negotiation |
| Power Consumption ⭐ | 2.8W |
| Application | Servers, Workstations, Virtualization, Soft Routers |
| Operating Temperature | 0°C~55°C (32°F~131°F) |
| Storage | -40°C~70°C (-40°F~158°F) |
| Storage Humidity | 35°C, 90% Non-condensing Relative Humidity |
| Dimensions | 131 x 64mm |
| Weight | Net: 74.7g | Gross: 173.6g |
| System Compatibility | Windows, Linux, VMware |
Ideal Application Scenarios
Servers & Workstations
Perfect for enterprise servers and high-performance workstations requiring reliable network connectivity with link aggregation support for increased bandwidth and redundancy.
Virtualization Platforms
Excellent compatibility with VMware ESXi, Proxmox VE, Hyper-V with SR-IOV and VMDq support for efficient virtual machine networking with minimal CPU overhead.
Soft Router & Networking
Ideal for pfSense, OPNsense network security appliances with dual ports for WAN/LAN separation, multi-WAN configurations, or transparent firewall deployments.
Package Includes
📦 1 × Lekuo PCIe Dual-Port Gigabit Network Adapter (Intel 82576)
📦 1 × Low-Profile Bracket
Frequently Asked Questions
Q1: Is this compatible with Windows, Linux and VMware?
Yes, the Intel 82576 chipset has excellent driver support across Windows, Linux, and VMware platforms. Most operating systems include native drivers, and we provide a driver package for optimized performance and advanced features.
Q2: How do I install this network card?
Please first shut down the system, insert the card into any available PCIe slot (x1, x4, x8 or x16), secure it with the fixing screws, and then restart the system. After that, install the driver.
Q3: Do I need to install drivers manually?
Most modern operating systems will auto-install drivers. However, we provide a driver package for manual installation, especially useful for Windows Server environments or when you need advanced features like SR-IOV for virtualization.
Q4: Can I use this for virtualization with VMware or Proxmox?
Absolutely! The Intel 82576 chipset is highly recommended for virtualization platforms. It supports SR-IOV and VMDq, allowing you to assign dedicated network resources directly to virtual machines for optimal performance.
Q5: What's the maximum speed I can achieve?
Each port supports 10/100/1000 Mbps auto-negotiation with full-duplex capability. When using both ports with link aggregation (LACP), you can achieve up to 2 Gbps aggregate throughput for increased bandwidth.
Q6: What is the power consumption of this card?
This network adapter consumes only 2.8W, making it extremely energy-efficient and suitable for 24/7 server operation without generating excessive heat or increasing your power costs.
Q7: Will this work in a PCIe x16 slot?
Yes, this PCIe x1 adapter is fully compatible with x4, x8, and x16 slots. It will function perfectly in any available PCIe slot on your motherboard, providing maximum installation flexibility.
Q8: What warranty is included with this product?
This network adapter comes with a 1-year warranty. We stand behind the quality of our products and provide comprehensive technical support for installation, configuration, and troubleshooting.