QNAP 25GbE SFP28 Network Card for Server & NAS QXG-25G2SF-CX6

Supercharge your enterprise network and data infrastructure with the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE SFP28 Network Expansion Card. Powered by the high-performance NVIDIA Mellanox® ConnectX®-6 Lx SmartNIC controller, this enterprise-grade NIC delivers lightning-fast data transfer rates of up to 25 Gbps per port, offering a massive bandwidth upgrade over standard 10GbE solutions.

Next-Gen PCIe Gen4 Performance

Engineered for high-throughput computing, the card utilizes a PCIe Gen4 x8 interface (backward compatible with PCIe Gen3 and Gen2) to eliminate system bottlenecks. By configuring Port Trunking (Link Aggregation), administrators can combine both 25GbE ports to achieve combined bandwidths of up to 50GbE, dramatically accelerating intensive file transfers, 4K/8K video editing workflows, and high-volume data backups.

Optimized for Virtualization & Data Centers

Equipped with Single Root I/O Virtualization (SR-IOV) hardware offloading, the QXG-25G2SF-CX6 bypasses traditional software hypervisor layers, allocating hardware resources directly to individual virtual machines (VMs). This drastically reduces CPU overhead, slashes network latency, and ensures deterministic performance for I/O-intensive enterprise applications.

Key Features

• NVIDIA Mellanox® ConnectX®-6 Lx Controller: Delivers secure, efficient, and enterprise-grade networking.
• Dual-Port SFP28 Connectivity: Supports both 25GbE and 10GbE optical transceivers and Direct Attach Copper (DAC) cables.
• Up to 50GbE with Port Trunking: Combine dual ports for extreme aggregated throughput and network redundancy.
• PCIe Gen4 x8 Interface: Maximum bus bandwidth with full backward compatibility for older PCIe slots.
• SR-IOV Support: Hardware-level virtualization offload for enhanced virtual machine networking and lower latency.
• Universal Compatibility: Seamlessly compatible with QNAP NAS operating systems (QTS / QuTS hero) as well as Windows and Linux servers.