Quad-Port 10GbE Network Expansion Card

QNAP QXG-10G4SF-BCM

The QXG-10G4SF-BCM is a quad-port 10GbE network expansion card with four SFP+ ports and PCIe Gen 4 x8 connectivity. It provides up to 40Gbps aggregate bandwidth and supports SR-IOV, RDMA, iSER and Link Aggregation for I/O-intensive and latency-sensitive network environments.

What is the QNAP QXG-10G4SF-BCM?

It is a Broadcom BCM57502-based 10GbE PCIe network card for compatible QNAP NAS, Windows and Linux devices. Its four SFP+ ports support 10Gbps and 1Gbps transmission rates, while advanced offload and virtualization features help reduce CPU overhead and improve network efficiency.

4 x SFP+Four 10GbE network ports

Up to 40GbpsAggregate bandwidth through multiple ports

PCIe Gen 4 x8High-bandwidth host interface

SR-IOV + RDMAVirtualization and low-latency networking support

High-Speed 10GbE Connectivity

Expand compatible systems with four SFP+ ports for high-bandwidth network access.

The QXG-10G4SF-BCM provides four 10GbE SFP+ ports and supports up to 40Gbps aggregate bandwidth. It is designed to help eliminate performance bottlenecks in high-speed file access, multi-user and all-flash storage environments.

Use the card with QNAP 10GbE switches to build a high-speed network environment using SFP+ DAC cables or SFP+ optical transceivers.

Advanced Network and Virtualization Features

Controller-level technologies improve efficiency for demanding workloads.

SR-IOV

Allocates network resources from the physical adapter directly to virtual machines, helping reduce CPU overhead and improve VM network performance.

RDMA, RoCE and iSER

Supports direct memory access over the network to reduce latency, lower CPU utilisation and improve throughput in supported environments.

Network Virtualisation Support

Supports NVGRE, VXLAN and Geneve, along with up to 128 Virtual Functions per port.

Link Aggregation

Combines multiple ports to provide higher bandwidth, load balancing and network redundancy.

VLAN Support

Supports VLAN insertion and stripping, together with IEEE 802.1Qbb and IEEE 802.1Qaz standards.

Broadcom Controller

The Broadcom BCM57502 controller provides enterprise-grade network processing and controller-level efficiency.

SMB Multichannel and Port Trunking

Use multiple 10GbE links to increase available bandwidth.

SMB Multichannel

Multiplies the available bandwidth between a NAS and directly connected clients, with up to 40Gbps total bandwidth stated in the supplied product information.

Port Trunking

Improves file access efficiency when multiple users access data simultaneously through a network switch infrastructure.

NAS, Windows and Linux Support

Install the card in a compatible QNAP NAS or supported PC platform.

The supplied product information lists support for QNAP NAS, Windows and Linux devices. One free PCIe slot is required in supported QNAP NAS models.

QNAP NAS: QTS and QuTS hero support is listed in the supplied product information.
Windows: Windows 11 and Windows Server support are listed; a driver is required.
Linux: Ubuntu support is listed; a driver is required.

Frequently Asked Questions

Quick answers about the QNAP QXG-10G4SF-BCM.

How many network ports does the QXG-10G4SF-BCM have?

It has four SFP+ ports supporting 10Gbps and 1Gbps transmission rates.

What is the maximum aggregate bandwidth?

The supplied product information states up to 40Gbps aggregate bandwidth when multiple 10GbE ports are combined.

Does it support SR-IOV?

Yes. SR-IOV is supported, with up to 128 Virtual Functions per port listed in the datasheet.

Does it support RDMA?

Yes. The card supports RDMA over Converged Ethernet, Zero Touch RoCE and iSER.

Can it be installed in a QNAP NAS or PC?

Yes. The supplied information lists support for compatible QNAP NAS, Windows and Linux devices.

What brackets are included?

A low-profile bracket is pre-installed, and full-height plus specialised brackets for selected QNAP NAS models are bundled.

What is included in the package?

The package contains one network card, one quick installation guide and three brackets.

What is the standard warranty?

The supplied datasheet lists a three-year standard warranty.

Compatibility note: Confirm the required QNAP NAS model, operating system version, driver and available PCIe slot before installation.

Product images are for illustrative purposes only. Designs and specifications are subject to change without notice.

(QXG-10G4SF-BCM)

QNAP QXG-10G4SF-BCM Specifications

Review the controller, ports, PCIe interface, network features, compatibility, included parts and warranty information.

Specification	Details
Product Details
Product Type	Quad-port 10GbE network expansion card
Controller	Broadcom BCM57502
Interfaces and Performance
Number of Ports	4 x SFP+ ports
Connector	SFP+
PCIe and Lanes	PCIe Gen 4 x8
Transmission Rates	10Gbps / 1Gbps
Aggregate Bandwidth	Up to 40Gbps, as stated in the supplied product information
Standards and Network Features
IEEE Standards	IEEE 802.1Qbb IEEE 802.1Qaz
SR-IOV Support	Yes
RDMA over Converged Ethernet (RoCE)	Yes
Zero Touch RoCE (ZTR)	Yes
iSER Support	Yes
VLAN Insertion / Stripping	Yes
NVGRE, VXLAN and Geneve	Yes
Virtual Functions	Up to 128 Virtual Functions (VFs) per port
Link Aggregation	Supported through SMB Multichannel or Port Trunking, as stated in the supplied product information
Compatibility
Supported QNAP NAS	QNAP NAS models with PCIe slot(s); one free slot required
Supported NAS Operating Systems	At least QTS 5.2.1 and QuTS hero h5.2.1 build 20241106, according to the datasheet
SMB Multichannel Requirement	QTS 5.1 or QuTS hero 5.1 and later, according to the supplied product information
Ubuntu Support	Ubuntu 22.04, according to the datasheet
Windows Support	Windows 11
Windows Server Support	Windows Server 2022
Brackets, Cables and Package Contents
Bracket	Low-profile bracket pre-installed; full-height and specialised brackets for selected QNAP NAS models are bundled
Port and Cable	SFP+ DAC cable (1.5m, 3m or 5m) or SFP+ optical transceiver
Package Contents	1 x network card 1 x QIG 3 x brackets
Warranty
Standard Warranty	3 years

Source discrepancy: The supplied marketing text and datasheet list different operating-system versions. The table above uses the datasheet values for formal specifications. Review the notes provided with this output before publishing.

QNAP reserves the right to replace parts or accessories if the original is no longer available from its manufacturer or supplier. Product images are for illustrative purposes only. Designs and specifications are subject to change without notice.