



QNAP QXG-25G2SF-CX6
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Upgrade your network capabilities with the QNAP QXG-25G2SF-CX6, a powerful dual 25GbE network expansion card designed to deliver high-speed connectivity and optimized performance. Equipped with an NVIDIA Mellanox ConnectX-6 Lx SmartNIC controller, this card is ideal for accelerating data transfer, improving file sharing, and enhancing virtualization environments for demanding applications.
Key Features at a Glance
- Equipped with an NVIDIA Mellanox ConnectX-6 Lx SmartNIC controller.
- Features dual 25GbE ports, also supporting 10Gbps connections.
- PCIe Gen 3 x4 interface for flexible installation into compatible slots.
- Supports Port Trunking for combined speeds of up to 50 Gbps.
- Includes low-profile, full-height, and specialized brackets for versatile mounting.
- Compatible with QNAP QTS, QuTS hero, Windows, and Linux operating systems.
Accelerated Network Performance
Experience significantly faster data transfer and file sharing with dual 25GbE ports. The card supports Port Trunking, allowing you to combine both ports to achieve transfer speeds of up to 50 Gbps, making it perfect for intensive data operations and high-bandwidth applications.
Optimized Virtualization Environments
Enhance your virtual machine performance with SR-IOV support, which allocates bandwidth resources directly from the physical network card to VMs, ensuring reliable applications and reduced CPU overheads. Additionally, RoCE support reduces latency and improves efficiency for VMware virtualization by accessing the network directly in RAM.
Versatile Compatibility and Installation
The QXG-25G2SF-CX6 offers broad compatibility, supporting QNAP's QTS and QuTS hero, as well as Windows and Linux operating systems. Its PCIe Gen 3 x4 interface (compatible with x4, x1 slots) and included low-profile, full-height, and specialized brackets ensure easy integration into various systems, including selected QNAP NAS models.
Technical Specifications
| Brand | QNAP |
|---|---|
| Manufacturer | QNAP |
| Model | QXG-25G2SF-CX6 |
| Model Name | QXG-25G2SF-CX6 |
| Product Dimensions | 14.48 x 19.05 x 5.59 cm; 240 g |
| Item model number | QXG-25G2SF-CX6 |
| Operating System | linux |
| Hardware Interface | PCI Express 4.0 |
| Compatible Devices | Desktop |
| Mounting Hardware | QXG-25G2SF-CX6 |
| Number of items | 1 |
| Batteries Included | No |
| Batteries Required | No |
| Data Transfer Rate | 50 Gigabits Per Second |
| Data Link Protocol | IEEE 802.1p |
| Manufacturer | QNAP |
| Item Weight | 240 g |
Frequently Asked Questions
Q: What controller does the QNAP QXG-25G2SF-CX6 use?
A: The QXG-25G2SF-CX6 is equipped with an NVIDIA Mellanox ConnectX-6 Lx SmartNIC controller.
Q: What network speeds does this card support?
A: This network card features dual 25GbE ports and also supports 10Gbps connections, with Port Trunking enabling up to 50 Gbps transfer speeds.
Q: Which operating systems are compatible with the QXG-25G2SF-CX6?
A: The QNAP QXG-25G2SF-CX6 supports QNAP's QTS and QuTS hero, in addition to Windows and Linux operating systems.

