Dual 25GbE SFP28
Two ports support 25Gbps and 10Gbps.
QNAP QXG-25G2SF-CX6 DUAL PORT QSFP28 25GbE N ETWORK CARD, LOW-PROFILE (PCIE GEN4 X8)
Model # QXG-25G2SF-CX6
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SKU: QXG-25G2SF-CX6
$884.00
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QNAP ConnectX-6 Lx 25GbE card
QNAP QXG-25G2SF-CX6 Dual-Port 25GbE SFP28 Network Card
A dual-port 25GbE SFP28 network expansion card with an NVIDIA Mellanox ConnectX-6 Lx controller, PCIe Gen 4 x8 and 10/25Gbps transmission rates.
Network ports2 × SFP28
Transmission rates25Gbps / 10Gbps
ControllerConnectX-6 Lx
Host interfacePCIe Gen 4 x8
Dual-port 25GbE with ConnectX-6 Lx
The QXG-25G2SF-CX6 uses an NVIDIA Mellanox ConnectX-6 Lx controller and provides two SFP28 ports supporting 25Gbps and 10Gbps transmission rates.
PCIe and virtualisation scope
- PCIe Gen 4 x8 is specified.
- The supplied description states backward compatibility with PCIe Gen 3 and Gen 2.
- SR-IOV support is explicitly listed.
- Up to 50GbE combined bandwidth is stated when the ports are combined using port trunking.
Operating systems and connection options
- QTS / QuTS hero is listed with an upgrade to the latest version recommended.
- Windows and Linux require drivers according to the supplied specifications.
- Ubuntu 18.04/20.04 and Windows 8/10 are listed.
- Use a supported SFP28 DAC cable or SFP28 optical transceiver.
Confirm card, driver and transceiver compatibility
Check the exact QNAP NAS or computer, available PCIe slot, operating-system and driver, switch, supported SFP28 cable or transceiver, and bracket requirement before installation.
Frequently asked questions
Answers below are based only on the supplied product information for QXG-25G2SF-CX6.
How many network ports does the QXG-25G2SF-CX6 provide?
It provides two SFP28 ports supporting 25Gbps and 10Gbps transmission rates.
Which controller does the card use?
The supplied specifications identify an NVIDIA Mellanox ConnectX-6 Lx controller.
Which PCIe interface is specified?
The card is listed with PCIe Gen 4 x8, and the supplied description states backward compatibility with PCIe Gen 3 and Gen 2.
Does it support SR-IOV?
Yes. SR-IOV support is explicitly listed in the supplied product description.
What is included with the card?
The supplied package contents list one network card, one QIG and three brackets.
What warranty applies to the QXG-25G2SF-CX6?
It is supplied with the applicable QNAP manufacturer warranty. Confirm the term for this exact SKU before purchase.
(QXG-25G2SF-CX6)
Features and highlights
QNAP QXG-25G2SF-CX6 Dual-Port 25GbE SFP28 Network Card
ConnectX-6 Lx controller
The supplied specifications identify the NVIDIA Mellanox controller.
PCIe Gen 4 x8
Backward compatibility with Gen 3 and Gen 2 is stated.
SR-IOV support
SR-IOV is explicitly listed in the supplied description.
Additional supplied highlights
- Up to 50GbE combined bandwidth is stated with port trunking.
- 512 virtual functions and eight physical functions per host are listed.
- Windows and Linux driver requirements are supplied.
- One network card, one QIG and three brackets are listed in the package.
- Covered by the applicable QNAP manufacturer warranty.
Technical specifications
Specifications below are organised from the supplied product information for QXG-25G2SF-CX6.
| Specification | Details |
|---|---|
| Product Details | |
| Model | QXG-25G2SF-CX6 |
| Product Type | Dual-port 25GbE network expansion card |
| Controller | NVIDIA Mellanox ConnectX-6 Lx |
| Interfaces and Performance | |
| Number of Ports | 2 × SFP28 |
| Connector | SFP28 |
| PCIe and Lanes | PCIe Gen 4 x8 |
| PCIe Backward Compatibility | PCIe Gen 3 and Gen 2, as stated in the supplied description |
| Transmission Rates | 25Gbps / 10Gbps |
| Combined Bandwidth Stated | Up to 50GbE using port trunking |
| Standards and Virtualisation | |
| IEEE Standards | IEEE 802.3ae 10 Gigabit Ethernet 25/50 Ethernet Consortium 25G and 50G with FEC modes IEEE 802.3by 25G with FEC modes IEEE 802.3ad / 802.1AX Link Aggregation IEEE 802.3az Energy Efficient Ethernet, Fast-Wake mode IEEE 802.3ap auto-negotiation and KR startup IEEE 802.1Q / 802.1P VLAN tags and priority IEEE 802.1Qaz ETS |
| SR-IOV Support | Stated in the supplied product description |
| Virtual Functions | 512 |
| Physical Functions per Host | 8 |
| Compatibility | |
| Supported NAS Operating Systems | QTS / QuTS hero; upgrade to the latest version recommended |
| Supported QNAP NAS | Models with PCIe slot(s); one free slot required |
| Windows and Linux | Driver required |
| Ubuntu Support | Ubuntu 18.04 / 20.04 |
| Windows Support | Windows 8 / 10 |
| Cables, Brackets and Package | |
| Listed Cable / Transceiver SKUs | CAB-DAC30M-SFP28, CAB-DAC15M-SFP28, TRX-25GSFP28-SR |
| Port and Cable | SFP28 DAC cable up to the listed 3m option or SFP28 optical transceiver |
| Bracket | Low-profile bracket pre-installed; full-height and specialised brackets for selected QNAP NAS are bundled |
| Package Contents | 1 × network card 1 × QIG 3 × brackets |
| SKU | QXG-25G2SF-CX6 |
| Barcode # | 4713213519066 |
| Brand | QNAP |
| Shipping Weight | 0.5000kg |
| Shipping Width | 0.050m |
| Shipping Height | 0.050m |
| Shipping Length | 0.050m |
QNAPManufacturer warranty
QNAP manufacturer warranty
The QNAP QXG-25G2SF-CX6 is supplied with the applicable QNAP manufacturer warranty.
Warranty coverage, duration, 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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