QNAP 

QNAP QXG-25G2SF-CX6 2PORT SFP28 25GBE NETWORK EXPANSION CARD LP PCIE GEN4X8 PCIE

Mfg Part Number:  QXG-25G2SF-CX6  
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Price: $462.71
Quantity:
In Stock: 64
Last Updated: Jan 26, 2026
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The QXG-25G2SF-CX6 features an NVIDIA Mellanox® ConnectX®-6 Lx SmartNIC controller, supports PCIe Gen4 (backwards compatible with Gen3/ Gen2) and provides up to 25 Gbps transfer speeds (supports 10/25Gbps). By using Port Trunking to combine multiple ports, up to 50GbE can be achieved for accelerating file sharing and intensive data transfer. With SR-IOV support, the QXG-25G2SF-CX6 greatly boosts network efficiency and is ideal for I/O-intensive and latency-sensitive virtualization applications and data centers.

High-speed 25GbE Networking

The TS-h3088XU-RP supports 25GbE networking, and can be used with the QXG-25G2SF-CX6 to expand network connectivity. It can also be used with a 25GbE Switch to build a budget-friendly high-speed network environment.

Strengthen Your virtualization Environment with SR-IOV and RoCE

The QXG-25G2SF-CX6 supports SR-IOV, which can allocate bandwidth resources from a physical network card directly to VMs. It ensures reliable VM applications and reduced CPU overheads. The QXG-25G2SF-CX6 also supports RoCE, which can access a network directly in RAM to effectively reduce latency and enhance performance and efficiency for VMware® virtualization environments.

Ensure reliable data transfer with Forward Error Correction (FEC)

The QXG-25G2SF-CX6 supports FEC to overcome packet loss - a potentially common occurrence in fast, long-distance networks. FEC helps the receiving side detect and recover lost data to correct bit errors, thus ensuring reliable data transmission over "noisy" communication channels. With three FEC modes, you can use a suitable cable and switch to build an optimal network environment.

Supports Windows and Linux servers/workstations

Besides QNAP devices, the QXG-25G2SF-CX6 supports many platforms, including Windows® 10, Windows Server®, and Linux® (driver required) which allows you to attain optimal business performance for a wider range of system applications and services. The higher bandwidth density with reduced links helps reduce cabling footprint and operational costs.

Main Specification
General Information
Manufacturer QNAP Systems
Manufacturer Part Number QXG-25G2SF-CX6
Manufacturer Website Address http://www.qnap.com
Brand Name QNAP
Product Series QXG
Product Model QXG-25G2SF-CX6
Product Name QXG-25G2SF-CX6 25Gigabit Ethernet Card
Packaged Quantity 1
Product Type 25Gigabit Ethernet Card
Technical Information
Features RDMA over Converged Ethernet (RoCE)
Features Virtual Extensible LAN (VXLAN)
Features iSCSI Extensions over RDMA (iSER)
Features Single Root I/O Virtualization (SR-IOV)
Features VLAN Support
Features Network Virtualization using Generic Routing Encapsulation (NVGRE)
Interfaces/Ports
Host Interface PCI Express 4.0 x8
Total Number of Ports 2
I/O Expansions
Expansion Slot Type SFP28
Media & Performance
Media Type Supported Optical Fiber
Maximum Data Transfer Rate 25 Gbit/s
Physical Characteristics
Form Factor Plug-in Card
Bracket Height Low-Profile
Miscellaneous
Package Contents
  • QXG-25G2SF-CX6 25Gigabit Ethernet Card
  • 1 x QIG
  • 3 x Brackets
Device Supported Server
Device Supported Workstation
Device Supported Computer
Operating System Compatibility Ubuntu Linux
Operating System Compatibility Windows 8
Operating System Compatibility Windows 10
Operating System Compatibility Windows Server 2016
Operating System Compatibility Windows Server 2019
Warranty
Limited Warranty 3 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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