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The QXG-25G2SF-BCM 25 GbE network expansion card, supports PCIe 4.0 and provides up to 50Gbps total throughput to overcome performance bottlenecks. Supporting offload functionality including RDMA and SR-IOV, the QXG-25G2SF-BCM greatly boosts network efficiency and is ideal for I/O-intensive and latency-sensitive virtualization and data centers. The QXG-25G2SF-BCM is a perfect match for all-flash storage to realize the highest performance potential for ever-demanding IT challenges.

  • NAS and PC

    The QXG-25G2SF-BCM can be installed in a QNAP NAS or Windows® PC.

  • PCIe 4.0

    PCIe Gen 4 x8 provides up to 50 Gbps transfer speeds.

  • SR-IOV

    Improves the network performance of virtual machines.

  • RDMA (RoCE)

    Reduces latency, lowers CPU utilization, and boosts overall throughput

Gain up to 50 Gbps connectivity

By virtually bundling two 25 GbE ports with SMB multichannel or port trunking, you gain larger bandwidth for your QNAP NAS. Let’s see which features are suitable for your usage scenarios:

  • SMB Multichannel: Multiply the available bandwidth (50Gbps) between NAS and directly-connected clients. Suited for personal use.
  • Port trunking: Increases file access efficiency for simultaneous data access with multiple members. Recommended for users who deploy network switches in their IT infrastructure.

Strengthen your virtualization environment with SR-IOV

The QXG-25G2SF-BCM supports SR-IOV, which can allocate bandwidth resources from a physical network card directly to VMs on the NAS. It helps improve network efficiency, ensuring reliable VM applications and reduced CPU overheads.

 

Supports RoCE for Reduced Latency and Enhanced Performance for VM Environments

The QXG-25G2SF-BCM supports RoCE, which can access a network directly in RAM to effectively reduce latency and enhance performance and efficiency for VMware® virtualization environments.

 

Build a 25 GbE network environment

Increase your IT performance and productivity by using the QXG-25G2SF-BCM with QNAP’s switch, making it easier than ever to deploy a blazing-fast 100GbE network for your business.

(QXG-25G2SF-BCM)

Dual-port 25 GbE network expansion card

Dimensions (L x W x H) 186 mm length × 1-slot width × Low-profile (The dimension is based on PCBA size × not including the bracket) mm
Controller Broadcom 57502
Number of Ports 2 x SFP28
Connector SFP28
PCIe and Lanes PCIe Gen4 x8
Transmission Rates 25Gbps/10Gbps
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
Bracket Low-profile bracket pre-installed; full-height and specialized (for selected QNAP NAS) brackets are bundled
SR-IOV Support  
RDMA over Converged Ethernet (RoCE), Zero Touch RoCE (ZTR) Support  
VLAN insertion/stripping Support  
iSER Support  
NVGRE, VXLAN, Geneve Support  
How mant virtual functions 512
How many physical functions per host 8
Supported NAS operating systems QTS / QuTS 5.2.4 or later
Supported QNAP NAS Models with PCIe slot(s) (1 free slot required)
Support Ubuntu Commercial Linux Distribution Ubuntu 20.04
Support Windows Windows 11
Support Windows Server Windows Server 2022/2025
Port and Cable SFP28 DAC cable (3M) or SFP28 OPTIC transceiver
Package Contents 1 x Network card; 1 x QIG; 3 x Brackets
Standard Warranty 3 years
SKU QXG-25G2SF-BCM
Model # QXG-10G2SF-X710
Brand QNAP
Shipping Weight 1.0000kg

Manufacturer Warranty: 3 Year Manufacturer Warranty

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QNAP QXG-25G2SF-BCM Dual-port, 25 GbE network expansion card

Model # QXG-25G2SF-BCM

  • SKU: QXG-25G2SF-BCM

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