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. 
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.
Note:
1. SR-IOV is supported by specific QNAP NAS models and should work with SR-IOV compatible adapters. Click here to check supported NAS models.
2. Both the NAS that installs the QXG-25G2SF-CX6 and the receiving-end devices must support RoCE. If the receiving devices do not support RoCE, it will use TCP/IP.
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
The higher bandwidth density with reduced links helps reduce cabling footprint and operational costs.
Dual-port 25 GbE network expansion card
Key Features
- Dual 25GbE Ports: Provides two SFP28 connectors for ultra-high-speed network connectivity.
- PCIe Gen4 x8 Interface: Utilizes the latest PCIe technology for maximum bandwidth.
- Advanced Networking: Supports SR-IOV, RDMA over Converged Ethernet (RoCE), and VLANs for enhanced virtualization and network efficiency.
- Flexible Design: Includes low-profile, full-height, and specialized brackets for easy installation in various devices.
- 3-Year Warranty: Comes with a standard 3-year warranty for peace of mind.
Connectivity & Performance
- Controller: NVIDIA Mellanox ConnectX-6 Lx
- Ports: 2 x SFP28
- Interface: PCIe Gen4 x8
- Transmission Rates: 25Gbps / 10Gbps
- Supported Cables: SFP28 DAC cable (3M) or SFP28 OPTIC transceiver (Cables are sold separately, models listed: CAB-DAC30M-SFP28, CAB-DAC15M-SFP28, TRX-25GSFP28-SR)
Advanced Functions
- SR-IOV Support: Yes, with 512 virtual functions and 8 physical functions per host.
- RDMA over Converged Ethernet (RoCE): Yes, with Zero Touch RoCE (ZTR) support.
- VLAN: Supports insertion and stripping of VLAN tags.
- Other Protocols: Supports iSER, NVGRE, VXLAN, and Geneve.
Physical Specifications
- Dimensions (L x W x H): 117.33 mm (length) x 1-slot (width) x Low-profile (height).
- Brackets:
- Low-profile bracket (pre-installed)
- Full-height bracket (bundled)
- Specialized bracket for selected QNAP NAS (bundled)
Compatibility & Drivers
- Supported NAS OS: QTS/QuTS hero (latest version recommended)
- Supported Windows: Windows 8, 10, Windows Server 2016, 2019
- Supported Linux:
- Ubuntu 20.04: Driver mlx5_core, version 5.15.0-97-generic
- Ubuntu 22.04: Driver mlx5_core, version 6.5.0-35-generic
- QNAP NAS Models: Requires one free PCIe slot on a compatible model.
- Note: Drivers are required for Windows and Linux to use the card.
Package Contents
- 1 x Network Card
- 1 x Quick Installation Guide (QIG)
- 3 x Brackets (Low-profile pre-installed, full-height and specialized bundled)
Warranty
- Standard Warranty: 3 Years
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
. Any replacement would be fully tested and verified to meet strict compatibility and stability guidelines and will deliver identical performance to the original.
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