# Network card Chelsio T6225-CR — Internal Fiber, PCI Express, 25 Gbps, IEEE 802.1Q/802.3 standards

**URL:** https://aio.lv/en/product--chelsio-t6225-cr--7913059
**Data updated:** 2026-03-11 11:52 (EET)
**Category:** Network Cards
**Manufacturer:** Chelsio
**Manufacturer code:** T6225-CR
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 055.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 872.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chelsio-t6225-cr--7913059

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Chelsio T6225-CR is an internal wired network card with a fiber interface and PCI Express host connection, supporting up to 25,000 Mbit/s. It implements networking standards including IEEE 802.1Q, 802.3z/ae/ad/x/az and 802.1p for VLAN tagging, link aggregation and flow control. Suitable for servers and high-throughput workstations requiring low-latency 25 Gbps fiber connectivity.

## Long description

Chelsio T6225-CR is an internal dual-port fiber network card with a PCI Express host connection designed to deliver low-latency 25 Gbps Ethernet connectivity for servers and high-throughput workstations. The adapter supports 1/10/25Gb operation and a PCI Express 3.0 x8 host interface, implementing industry networking standards for VLAN tagging, flow control and link aggregation. It provides integrated offload capabilities for storage and cloud workloads and maintains compatibility with prior host software to simplify deployment and preserve existing software investments.
Advantages
The T6225-CR offers sub-microsecond end-to-end latency while offloading many networking, storage and security tasks from the host CPU, reducing processor load and lowering power and operational costs. Built-in protocol offloads include standard TCP/IP/UDP-based services as well as integrated crypto offload for IPsec, TLS/SSL, DTLS and SMB 3.x. The card supports standards-based link aggregation, inter-adapter failover and a Traffic Manager for flexible QoS and flow control, enabling resilient, high-availability deployments over existing switch infrastructure.
Suitable for
Data center servers running storage, virtualization or cloud workloads
High-performance computing (HPC) nodes requiring low-latency networking
Storage networks using iSCSI, FCoE or converged SAN deployments
Virtualized hosts and hyperconverged infrastructure needing CPU offload
Workstations or appliances that require 25 Gbps fiber connectivity
Key specifications
Connectivity technology: Wired
Interface: Fiber (dual-port)
Host interface: PCI Express 3.0 x8
Maximum data transfer rate: 25,000 Mbit/s (25 Gbps)
Supported networking standards: IEEE 802.1Q, IEEE 802.3z, IEEE 802.3x, IEEE 802.3az, IEEE 802.3ae, IEEE 802.3ad, IEEE 802.1p
Supports 1/10/25Gb Ethernet modes
Integrated offloads: TCP/IP/UDP, iSCSI, iWARP; crypto offload for IPsec, TLS/SSL, DTLS, SMB 3.x
Traffic Manager for QoS, flow control and traffic shaping
Features for reliability: memory ECC, data path CRC and T10-DIX offload
How to use
Install the Chelsio T6225-CR into an available PCI Express x8 (or higher) slot on a compatible server or workstation and connect fiber links to the card's optical ports using appropriate SFP28 or compatible transceivers and fiber cabling. Ensure the host system BIOS and operating system recognize PCI Express devices, then install Chelsio drivers and management software provided by the vendor or through validated OS packages. Configure network interfaces, VLANs, link aggregation or failover groups and enable offload features as required by your storage, virtualization or application stack.
Usage recommendations
Use validated fiber transceivers and single-mode/multimode fiber consistent with your network design, keep firmware and drivers up to date to benefit from performance and security fixes, and plan redundant link aggregation or inter-adapter failover for critical services. For storage deployments, enable the appropriate iSCSI or FCoE offloads and verify end-to-end checksums and CRC settings to ensure data integrity.

## Specifications

| Feature | Value |
|---|---|
| Quantity | 1 |

### 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 | 3.0 |

### Bandwidth

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

### Network

| Feature | Value |
|---|---|
| Networking standards | IEEE 802.1Q, IEEE 802.3z, IEEE 802.3x, IEEE 802.3az, IEEE 802.3ae, IEEE 802.3ad, IEEE 802.1p |
| iSCSI support | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 69.3 mm |
| Width | 167.6 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 13 W |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Operating temperature (T-T) | 0 - 55 |

## FAQ

### How much does the Chelsio T6225-CR network card — 25 Gbps Fiber cost, and is it available for purchase?

The price is 1,055.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 10.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Chelsio T6225-CR network card — 25 Gbps Fiber 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 Chelsio 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 Chelsio 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, networking standards, 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.

### Where can I download the instructions for Chelsio T6225-CR network card — 25 Gbps Fiber?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/7913059/54742871_large.webp