# Internal PCIe network adapter Supermicro AOC-S25G-b2S — PCIe 3.0, passive cooled, wired, 140.2×60.9×120 mm

**URL:** https://aio.lv/en/product--supermicro-aoc-s25g-b2s-o--3260833
**Data updated:** 2025-12-29 10:50 (EET)
**Category:** Network Cards
**Manufacturer:** Supermicro
**Manufacturer code:** AOC-S25G-B2S-O
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 385.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 318.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--supermicro-aoc-s25g-b2s-o--3260833

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Supermicro AOC-S25G-b2S is an internal PCIe network adapter designed for PCs. It uses a PCIe host interface and conforms to PCIe 3.0 expansion card standards. The card is wired, passively cooled and measures 140.2 × 60.9 × 120 mm. Intended for system expansion and high-performance wired connectivity in servers or workstations.

## Long description

The Supermicro AOC-S25G-b2S is an internal PCIe network adapter that provides 25GbE connectivity for servers and workstations. Based on the Broadcom BCM57414 chipset, the card supports advanced offload and networking features while remaining backward compatible with 10GbE. The adapter follows PCIe 3.0 expansion card standards, is passively cooled and wired, and measures 140.2 × 60.9 × 120 mm. It is intended for system expansion and higher-performance wired network access in data center, cloud or enterprise environments.
Advantages
The AOC-S25G-b2S offers a feature-rich 25GbE solution with Broadcom BCM57414 capabilities such as VXLAN, NVGRE and RoCE for efficient virtualized and RDMA networking. TruFlow and NPAR (NIC Partitioning) provide flexible connectivity and traffic partitioning for varied workloads. Backward compatibility with 10GbE reduces migration complexity and cost when upgrading existing infrastructure. Passive cooling and a standard PCIe 3.0 host interface make the card simple to install in compatible server and workstation systems.
Suitable for (tasks / use cases)
Upgrading data center or cloud servers from 10GbE to 25GbE
High-throughput wired networking for virtualization and storage traffic
Enterprise servers and workstations requiring flexible NIC partitioning
Systems where passive cooling is preferred or required
Key specifications
Model: Supermicro AOC-S25G-b2S (MPN: AOC-S25G-B2S-O)
Chipset: Broadcom BCM57414
Interface: PCIe 3.0 (internal expansion card)
Connectivity: Wired, 25GbE (backward compatible with 10GbE)
Cooling: Passive
Dimensions: 140.2 × 60.9 × 120 mm
Weight: 0.0905 kg
Color: Green
How to use
Install the adapter into an available PCIe 3.0 x8/x16 slot following the host system manufacturer’s instructions and observe ESD precautions. Secure the card in the chassis, connect compatible 25GbE or 10GbE cabling to the network port, and power on the system. Install or update the operating system drivers and firmware provided by Supermicro or Broadcom to enable VXLAN, NVGRE, RoCE and other offload features. Configure network settings and NIC partitions (NPAR) as required by your environment.
Usage recommendations
Use the adapter in systems that meet PCIe 3.0 slot and physical clearance requirements. For optimal performance with RoCE and RDMA features, ensure network switches and cables support required protocols and low-latency configurations. Keep firmware and drivers up to date and monitor thermal and asset management data when deploying in dense rack environments.

## Specifications

| Feature | Value |
|---|---|
| Purpose | PC |
| Easy to install | Yes |
| Cooling type | Passive |
| Output interface | PCIe |
| Expansion card standard | PCI 3.0 |
| Sustainability certificates | RoHS |

### Ports & interfaces

| Feature | Value |
|---|---|
| Connectivity technology | Wired |
| Host interface | PCIe |
| Internal | Yes |

### Design

| Feature | Value |
|---|---|
| Product colour | Green |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.0905 kg |
| Height | 120 mm |
| Width | 140.224 mm |
| Depth | 60.89 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 0 - 55 |

## FAQ

### How much does the Internal PCIe network adapter Supermicro AOC-S25G-b2S cost, and is it available for purchase?

The price is 385.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 09.07.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### 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 Supermicro 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 Supermicro 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, host interface, weight, product colour, 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/3260833/54734130_large.webp