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Deal.ai › Network Cards
885022021260
QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card
885022021260

QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card

Best price now

$449.00at AdoramaChecked 2 h ago

Compared across 7 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $449.00 at Adorama (checked Nov 11, 2026).
  • Checked at 7 stores.

Our take on the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card

The QXG-25G2SF-CX6 is a dual-port 25GbE network card for QNAP NAS and PCs with a PCIe 4.0 x8 slot. It uses two SFP28 cages that also accept SFP+ and SFP modules, so you can run 25GbE now and step down to 10GbE or 1GbE links. It is built for NAS-to-switch and NAS-to-NAS backbones, virtualization hosts and video editing over shared storage. Compared with single-port 25GbE cards it doubles port density, and compared with 10GbE cards it gives 2.5 times the bandwidth per port, but it needs a 25GbE-capable switch and cabling to pay off.

Best forQNAP NAS owners adding a 25GbE backboneWorkgroups editing video off shared storageVirtualization and backup servers moving large dataNetworks already running SFP28 or SFP+ switches
Pros
  • Two 25GbE SFP28 ports on one card
  • PCIe 4.0 x8 host interface
  • Backward compatible with SFP+ and SFP modules
  • Fits QNAP NAS and standard PCIe x8 slots
  • Cuts cabling to one card for two high-speed links
Cons
  • Needs a 25GbE switch and SFP28 optics or DACs to reach full speed
  • Requires PCIe 4.0 x8 bandwidth for both ports at line rate
  • No built-in RJ45 ports, so copper 10GbE needs transceivers
  • Overkill for home networks without 10GbE or faster switching

QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card prices at every store

  • B&H Photo-Video-AudioNew

    In stock

    $449.00Free shippingChecked 2 h ago
    Visit B&H Photo-Video-Audio
  • QNAP Online Store USANew

    In stock

    $449.00Free shippingChecked 2 h ago
    Visit QNAP Online Store USA
  • Best BuyNew

    In stock

    $484.59Free shippingChecked 2 h ago
    Visit Best Buy
  • AdoramaNew

    Availability unknown

    $449.00Checked 2 h ago
    Visit Adorama
  • Vision ComputersNew

    Availability unknown

    $449.00Checked 2 h ago
    Visit Vision Computers
  • ZoroNew

    Availability unknown

    $525.99Checked 2 h ago
    Visit Zoro
  • SuperWarehouse.comNew

    Availability unknown

    $538.54Checked 2 h ago
    Visit SuperWarehouse.com

Also available at

  • CompSourceCheck price at CompSource
  • DWGCheck price at DWG
  • eBayCheck price at eBay
  • NeweggCheck price at Newegg
  • StaplesCheck price at Staples
  • SystemsDirect.comCheck price at SystemsDirect.com
  • WalmartCheck price at Walmart

Store links may earn us a commission.

QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card price history

Lowest price we've seen: $449.00 on Nov 11 at B&H Photo-Video-Audio. Tracked across 14 stores since Nov 11.

About the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card

The QNAP QXG-25G2SF-CX6 is a dual-port 25 Gigabit Ethernet network card. It connects to a computer or server through a PCI Express 4.0 x8 interface.

Both ports use the SFP28 standard and take SFP/SFP+ cabling. The card is wired only and has no Bluetooth or Wi-Fi.

Ports
Dual-port
Ethernet speed
25 Gigabit Ethernet (25000 Mbps)
Interface
PCIe 4.0 x8
SFP standard
SFP28
Cable type
SFP/SFP+
SFP module
Yes
Bluetooth
No
Wi-Fi bands
No 2.4 GHz or 5 GHz

Specifications

Wired Speed (Mbps)
25000.0Source
Bluetooth
NoSource
Cable Type
SFP/SFP+Source
2.4 GHz
NoSource
SFP Module
YesSource
5 GHz
NoSource
SFP Standard
SFP28Source
Ethernet Speed
25 Gigabit EthernetSource
Interface
PCIe x8Source

Questions and answers

Does it work in a 10GbE network?
Yes. The SFP28 cages accept SFP+ modules and DACs, so the ports run at 10GbE or 1GbE with the right optics. You only get 25GbE with SFP28 modules and a 25GbE switch.
Which QNAP NAS support it?
It fits QNAP NAS models with a free PCIe 4.0 x8 slot, and the slot also accepts PCIe 3.0 cards at lower speed. Check your model's expansion slot and QNAP's compatibility list before buying.
What cabling and optics do I need?
Use SFP28 DAC cables or SFP28 optical transceivers for 25GbE, or SFP+ equivalents for 10GbE. The card has empty cages, so transceivers or DACs are bought separately.
Can I use it in a regular PC?
Yes, it is a standard PCIe x8 card and works in desktop and server boards with an open x8 or x16 slot. Drivers are needed for non-QNAP systems.
Is it worth it over a single-port 25GbE card?
If you need two high-speed links, for example one to a switch and one to another NAS, it saves a slot. For a single link, a one-port card does the same job for less.
Where is the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card cheapest?
At Adorama, for $449.00, as of our latest check.
Where can I buy the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card?
14 stores we checked sell it, including B&H Photo-Video-Audio, QNAP Online Store USA, Adorama, Vision Computers, Best Buy.

Stores we've priced the QNAP QXG-25G2SF-CX6 Dual-Port 25GbE PCI Express 4.0 x8 Network Card at

  • Adorama deals and prices
  • B&H Photo-Video-Audio deals and prices
  • Best Buy deals and prices
  • Newegg deals and prices
  • staples.com deals and prices
  • Walmart deals and prices
  • Zoro deals and prices
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