QNAP QXG-25G2SF-E810 25Gigabit Ethernet Card

Step into the next era of network performance with the QNAP QXG-25G2SF-E810. This dual-port 25 Gigabit Ethernet expansion card is purpose-built for serious workloads, delivering extraordinary throughput for high-demand environments. Designed to slot into PCI Express 4.0 x8 systems, it unlocks massive uplink capacity for data centers, virtualization hosts, NAS deployments, and workstations that demand more than standard 1GbE or 10GbE connections. If you crave faster backups, quicker live migrations, and smoother multimedia workflows, this card is engineered to be a cornerstone of your high-speed infrastructure. The QXG-25G2SF-E810 pairs robust hardware with practical features that help IT teams scale bandwidth, reduce bottlenecks, and future-proof their networks without replacing existing servers.

• Dual 25GbE SFP28 ports provide ample headroom for simultaneous high-speed uplinks and server-to-storage connectivity. Whether you’re aggregating uplinks to a spine-leaf fabric, connecting to NVMe-backed NAS storage, or isolated test/dev networks, two 25GbE interfaces deliver scalable bandwidth with room to grow. The SFP28 connectors offer flexible fiber cabling options, enabling long-distance connections within data centers and campus environments without sacrificing performance.
• PCIe 4.0 x8 expansion ensures you have the bandwidth to support demanding workloads. With PCIe 4.0 delivering up to 16 GT/s per lane, this card can move data between the host and the NIC with minimal latency, making it ideal for virtualization, high-performance compute tasks, and multi-VM environments. The x8 lane configuration provides a wide data path that helps minimize bottlenecks during peak transfers, file-intensive operations, and large-scale backups.
• Ideal for NAS, servers, and workstations the QXG-25G2SF-E810 is designed to enhance storage-centric setups, media editing suites, and enterprise-grade applications. Whether you’re running a QNAP NAS, a VMware host, or a Linux-based server, this card enables high-throughput connectivity to storage arrays, hyperconverged platforms, and data center fabrics. It’s particularly effective for workloads that demand sustained throughput, low latency, and consistent performance under load.
• Enhanced network features for business-grade performance this card supports modern Ethernet features that IT professionals rely on, including link aggregation, VLAN tagging, and quality-of-service (QoS) controls. These capabilities help optimize traffic flow, isolate performance-sensitive workloads, and ensure predictable performance for critical applications. In practice, you’ll experience smoother virtualized environments, faster data transfers, and more reliable backups when you combine dual 25GbE ports with robust network management.
• Easy integration and compatibility with minimal setup effort. The QXG-25G2SF-E810 is designed for straightforward installation in PCIe slots of compatible servers, desktops, and NAS hosts. Once installed, it integrates with standard drivers and networking stacks, allowing you to configure and manage your connections through familiar operating system tools. This card is built to work within a variety of deployment scenarios, helping you avoid vendor lock-in while delivering the performance you expect from a premium 25GbE solution.

Technical Details of QNAP QXG-25G2SF-E810 25Gigabit Ethernet Card

• Interface: PCIe 4.0 x8
• Ports: 2 x 25GbE SFP28 network ports
• Form factor: PCIe add-in card (designed for standard PCIe slots in servers and workstations)
• Supported protocols/standards: 25 Gigabit Ethernet with SFP28 compatibility for high-speed fiber connections
• Vendor and model: QNAP QXG-25G2SF-E810

how to install QNAP QXG-25G2SF-E810 25Gigabit Ethernet Card

• Prepare your system: Power down the host, unplug power cords, and open the chassis or server enclosure. Ensure you’re grounded to avoid static damage to sensitive components.
• Locate a suitable PCIe slot: Find an available PCIe x8 slot on the motherboard or riser card. The QXG-25G2SF-E810 relies on a PCIe 4.0 x8 interface to deliver peak performance, so ensure your system supports PCIe 4.0 or at least PCIe 3.0 with adequate bandwidth headroom.
• Insert the adapter: Gently align the card with the slot and firmly seat it into place. Secure the bracket with a screw to ensure the card remains stable during operation. If your enclosure has a low-profile requirement, use the appropriate bracket if provided.
• Connect the cables: Attach your fiber transceivers and fiber cabling to the two SFP28 ports. Choose the correct fiber type (single-mode or multi-mode) and appropriate DACs or optics based on your network design and distance requirements.
• Power up and install drivers: Reassemble the chassis, reconnect power, and boot the host. In many environments, the card will be automatically detected by modern Linux or Windows installations. If the OS requests drivers, install the appropriate NIC drivers provided by the OS or QNAP support resources. Configure the interface names (e.g., eth0, eth1) as needed.
• Configure networking: Use your OS’s network management tools to assign IP addresses, set up VLANs, enable link aggregation if desired, and configure QoS policies. For virtualization or storage-heavy workloads, consider bonding or NIC teaming to maximize redundancy and throughput.

Frequently asked questions

• Q: How many ports does the QXG-25G2SF-E810 have and what speeds do they support? A: The card provides two 25 Gigabit Ethernet ports using SFP28 connectors, enabling high-speed uplinks and storage connections in a single PCIe expansion card.
• Q: What kind of system is required to utilize PCIe 4.0 x8 bandwidth? A: A motherboard or server with a PCIe 4.0 x8 slot is ideal to fully leverage the card’s bandwidth. PCIe 3.0 systems can still use the card but may experience lower peak throughput due to the slower interface.
• Q: Are there specific operating systems supported by this card? A: The QXG-25G2SF-E810 is designed to work with common server and NAS environments. Most modern Linux distributions and Windows Server versions recognize PCIe NICs, but it’s best to verify driver availability and compatibility with your exact OS version from QNAP support resources.
• Q: Can I use both ports simultaneously for link aggregation? A: Yes. The dual 25GbE ports support link aggregation (LACP) and other NIC teaming features, allowing you to combine bandwidth, increase fault tolerance, and optimize traffic distribution across multiple links.
• Q: What deployment scenarios benefit most from this card? A: High-performance NAS connections, virtualized workloads with multiple VMs, hyper-converged infrastructure, media editing or production pipelines, data center uplinks, and any scenario requiring sustained multi-gigabit throughput with low latency.