# Network Card QNAP QXG-25G2SF-CX6 Internal Fiber 25000 Mbit/s

**URL:** https://aio.lv/en/product--qnap-qxg-25g2sf-cx6--4213407
**Data updated:** 2025-12-29 15:46 (EET)
**Category:** Network Cards
**Manufacturer:** QNAP
**Manufacturer code:** QXG-25G2SF-CX6
**EAN:** 4713213519066
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 494.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 409.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qnap-qxg-25g2sf-cx6--4213407

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The QNAP QXG-25G2SF-CX6 is an internal fiber network card offering a maximum data transfer rate of 25000 Mbit/s. It features PCI Express host interface and wired connectivity technology, ensuring high-speed and reliable network performance for demanding applications. Ideal for data centers and enterprise environments, this card enhances network efficiency and supports high-bandwidth tasks.

## Long description

The QNAP QXG-25G2SF-CX6 is an internal fiber network card featuring an NVIDIA Mellanox ConnectX-6 Lx SmartNIC controller and a PCIe Gen4 host interface (backwards compatible with Gen3/Gen2). It delivers up to 25 Gbps transfer speeds and supports Port Trunking to combine ports for higher aggregated bandwidth. With SR-IOV support, this card is designed to improve network efficiency in I/O-intensive and latency-sensitive virtualization and data center environments.
Advantages
The QXG-25G2SF-CX6 provides high-speed 25GbE connectivity while maintaining compatibility with existing PCIe generations. Port Trunking enables up to 50GbE aggregated throughput for accelerated file sharing and heavy data transfers. SR-IOV and the Mellanox ConnectX-6 Lx SmartNIC controller enhance virtualization performance and reduce CPU overhead, and the fiber interface supports stable, long-reach wired connections suitable for data center deployments.
Suitable for
Data centers and server farms requiring high-bandwidth internal networking
Virtualization hosts and I/O-intensive virtual machines using SR-IOV
Workstations and servers running Windows 10, Windows Server, or Linux (driver required)
Environments needing aggregated bandwidth via Port Trunking (up to 50GbE)
Key specifications
Manufacturer: QNAP
Model: QXG-25G2SF-CX6
Controller: NVIDIA Mellanox ConnectX-6 Lx SmartNIC
Interface: PCIe Gen4 (backwards compatible with Gen3/Gen2)
Network interface: Fiber
Maximum data transfer rate: 25 Gbps
Port aggregation: Port Trunking (supports aggregated throughput up to 50GbE)
Virtualization support: SR-IOV
Compatibility: Windows 10, Windows Server, Linux (driver required), QNAP devices
How to use
Install the QXG-25G2SF-CX6 into a compatible PCIe slot on your server or workstation, ensuring the system is powered off before insertion. Secure the card and connect fiber cabling to the card’s SFP28 ports. Install the required drivers for your operating system (Windows or Linux) and configure network settings in the host OS or hypervisor. To increase bandwidth, configure Port Trunking/Link Aggregation on both the host and the network switch. For virtualization, enable and configure SR-IOV in the host platform and guest configurations where supported.
Usage recommendations
Use certified SFP28 fiber modules and compatible switches to ensure full 25GbE performance. Verify driver compatibility and firmware updates from QNAP or NVIDIA/Mellanox before deployment. When aggregating links, configure matching settings on the switch and confirm cabling and transceiver compatibility to achieve stable 50GbE throughput.

## Specifications

| Feature | Value |
|---|---|
| Component for | NAS |
| Harmonized System (HS) code | 85176990 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| Interface | Fiber |
| Host interface | PCI Express |
| Internal | Yes |
| Fiber ports quantity | 2 |
| Fiber optic connector | SFP28 |
| PCI version | 4.0 |

### Bandwidth

| Feature | Value |
|---|---|
| Maximum data transfer rate | 25000 Mbit/s |

### Performance

| Feature | Value |
|---|---|
| Windows operating systems supported | Y |
| Linux operating systems supported | Y |

### Packaging content

| Feature | Value |
|---|---|
| Quick installation guide | Yes |
| Mounting brackets included | Yes |

## FAQ

### How much does the Network Card QNAP QXG-25G2SF-CX6 cost, and is it available for purchase?

The price is 494.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 74 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 28.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Network Card QNAP QXG-25G2SF-CX6 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QNAP products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QNAP service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, interface, host interface, maximum data transfer rate, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4213407/54737301_large.webp