Dual SFP28 ports
Two ports support 25Gbps and 10Gbps transmission rates.
QNAP QXG-25G2SF-BCM Dual-port, 25 GbE network expansion card
Model # QXG-25G2SF-BCM
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SKU: QXG-25G2SF-BCM
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QNAP dual-port 25GbE SFP28 card
QNAP QXG-25G2SF-BCM Dual-Port 25GbE SFP28 Network Card
A dual-port 25GbE SFP28 network expansion card with PCIe Gen 4 x8, a Broadcom 57502 controller and up to 50Gbps total throughput as stated in the supplied information.
Network ports2 × SFP28
Transmission rates25Gbps / 10Gbps
Host interfacePCIe Gen 4 x8
Warranty3 years
Dual-port 25GbE connectivity
The two SFP28 ports support 25Gbps and 10Gbps transmission rates. The supplied product information states up to 50Gbps total throughput across the card.
Virtualisation and RDMA features
- SR-IOV support is stated in the supplied description.
- RDMA over Converged Ethernet is listed for supported environments.
- The supplied specifications list 512 virtual functions and eight physical functions per host.
- SMB Multichannel and port trunking are named as bandwidth options.
Supported systems and connection requirements
- QTS / QuTS 5.2.4 or later is listed.
- QNAP NAS support requires one free PCIe slot.
- Ubuntu 20.04, Windows 11 and Windows Server 2022/2025 are listed.
- Use a supported SFP28 DAC cable or SFP28 optical transceiver.
Confirm the 25GbE environment
Check the exact host, PCIe slot, operating-system and driver requirements, switch, cable or transceiver, and the target workload before installation.
Frequently asked questions
Answers below are based only on the supplied product information for QXG-25G2SF-BCM.
How many 25GbE ports does the QXG-25G2SF-BCM provide?
It provides two SFP28 ports supporting 25Gbps and 10Gbps transmission rates.
What total throughput is stated?
The supplied product information states up to 50Gbps total throughput across the card.
Which controller and PCIe interface are specified?
The card uses a Broadcom 57502 controller and a PCIe Gen 4 x8 host interface.
Does the card support SR-IOV and RDMA?
Yes. The supplied description lists SR-IOV and RDMA over Converged Ethernet.
Which operating systems are listed?
The supplied specifications list QTS / QuTS 5.2.4 or later, Ubuntu 20.04, Windows 11 and Windows Server 2022/2025.
What warranty applies to the QXG-25G2SF-BCM?
The supplied specifications state a 3-year QNAP manufacturer warranty.
(QXG-25G2SF-BCM)
Features and highlights
QNAP QXG-25G2SF-BCM Dual-Port 25GbE SFP28 Network Card
Broadcom 57502
The controller is identified in the supplied specifications.
PCIe Gen 4 x8
The card uses the supplied high-bandwidth PCIe host interface.
SR-IOV and RDMA
Both capabilities are named in the supplied description.
Additional supplied highlights
- Up to 50Gbps total throughput is stated.
- 512 virtual functions and eight physical functions per host are listed.
- QTS / QuTS 5.2.4 or later, Ubuntu 20.04, Windows 11 and Windows Server 2022/2025 are listed.
- One network card, one QIG and three brackets are included.
- Three-year QNAP manufacturer warranty.
Technical specifications
Specifications below are organised from the supplied product information for QXG-25G2SF-BCM.
| Specification | Details |
|---|---|
| Product Details | |
| Model | QXG-25G2SF-BCM |
| Product Type | Dual-port 25GbE network expansion card |
| Controller | Broadcom 57502 |
| Dimensions | 186mm length × 1-slot width × low-profile; dimensions are based on PCBA size and exclude the bracket |
| Interfaces and Performance | |
| Number of Ports | 2 × SFP28 |
| Connector | SFP28 |
| PCIe and Lanes | PCIe Gen 4 x8 |
| Transmission Rates | 25Gbps / 10Gbps |
| Total Throughput Stated | Up to 50Gbps |
| Bandwidth Options Stated | SMB Multichannel and port trunking |
| Standards and Network Features | |
| IEEE Standards | IEEE 802.3az IEEE 802.1Q IEEE 802.3x IEEE 802.1p IEEE 802.3ad IEEE 802.3ae IEEE 1588 IEEE 802.1as |
| SR-IOV Support | Stated in the supplied product description |
| RDMA over Converged Ethernet | Stated in the supplied product description |
| Virtual Functions | 512 |
| Physical Functions per Host | 8 |
| Compatibility | |
| Supported NAS Operating Systems | QTS / QuTS 5.2.4 or later |
| Supported QNAP NAS | Models with PCIe slot(s); one free slot required |
| Ubuntu Support | Ubuntu 20.04 |
| Windows Support | Windows 11 |
| Windows Server Support | Windows Server 2022 / 2025 |
| Brackets, Cables, Package and Warranty | |
| Bracket | Low-profile bracket pre-installed; full-height and specialised brackets for selected QNAP NAS are bundled |
| Port and Cable | SFP28 DAC cable up to the listed 3m option or SFP28 optical transceiver |
| Package Contents | 1 × network card 1 × QIG 3 × brackets |
| Warranty | 3 years |
| SKU | QXG-25G2SF-BCM |
| Model # | QXG-10G2SF-X710 |
| Brand | QNAP |
| Shipping Weight | 1.0000kg |
QNAP3-year
QNAP manufacturer warranty
The QNAP QXG-25G2SF-BCM is supplied with a 3-year QNAP manufacturer warranty.
Warranty coverage, eligibility and claim assessment are subject to QNAP terms for the exact product. Please retain your DeviceDeal tax invoice as proof of purchase.
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