Lekuo Dual-Port 2.5GbE PCIe Network Card RTL8125B 2 x RJ45

Dual-Port 2.5GbE for Desktop, Server, and NAS

The Lekuo PR25R21 expands your system with two high-speed 2.5GbE RJ45 ports, making it ideal for desktops, servers, NAS devices, and network equipment that require faster and more stable wired connectivity than standard Gigabit Ethernet.

Built on Realtek RTL8125B

Powered by the Realtek RTL8125B chipset, the PR25R21 supports 2.5GBASE-T networking, auto-negotiation, VLAN tagging, and jumbo frames up to 16KB for smoother large-file transfer and multi-device network deployment.

Key Features

• Dual 2.5GbE RJ45 ports for multi-device or multi-network deployment
• Supports IEEE 802.3bz 2.5GBase-T and IEEE 802.3az Energy Efficient Ethernet
• Supports IEEE 802.1Q VLAN tagging and IEEE 802.1ad Double VLAN
• Jumbo frames up to 16KB for high-throughput file transfer
• Supports full-duplex IEEE 802.3x flow control
• Supports standard and low-profile chassis installation

Works With

• Operating Systems: Windows, Linux
• Use Cases: NAS upgrade, desktop LAN expansion, server networking, industrial or office network deployment
• Installation: PCIe expansion slot required