# BlueOptics SFP28-25G-ESR-CS-BO network transceiver module Fiber optic 25000 Mbit/s

**URL:** https://aio.lv/en/product--blueoptics-sfp28-25g-esr-cs-bo--5039579
**Data updated:** 2026-02-25 16:36 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP28-25G-ESR-CS-BO
**EAN:** 4063232073538
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 65.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 54.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-sfp28-25g-esr-cs-bo--5039579

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 12.08.2026 | free |
| Pickup points | 17.08.2026 | 1.89 EUR |
| Courier delivery to door | 17.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics SFP28-25G-ESR-CS-BO is a fiber optic network transceiver module designed for high-speed data transfer at 25000 Mbit/s. It features an SFP28 interface and weighs 40 g, making it suitable for various networking applications. This module is ideal for enhancing network performance and ensuring reliable connectivity.

## Long description

The BlueOptics SFP28-25G-ESR-CS-BO is a fiber optic network transceiver module designed for 25 Gbit/s Ethernet applications. It uses an SFP28 interface and supports a maximum data transfer rate of 25000 Mbit/s while weighing approximately 0.04 kg. The module provides optical transmit and receive functions over multimode fiber and is suitable for short-range, high-bandwidth links where reliable, low-latency connectivity is required.
Advantages
This SFP28 transceiver offers compact SFP28 form-factor compatibility with standard LC duplex connections and is intended for 25 Gigabit Ethernet environments. It supports high-speed data transfer at 25 Gbit/s and is compatible with common network hardware such as switches and routers that accept SFP28 modules. The module’s small size and modest weight make it easy to deploy in dense rack environments. Digital diagnostic monitoring (DDM/DOM) capability enables real-time information about supply voltage, laser bias current, optical transmit and receive power, and temperature to simplify maintenance and fault analysis.
Suitable for
 Short-range 25GbE links over multimode fiber
 High-density switch uplinks and server connections
 Data center top-of-rack and aggregation layer interconnects
 Network upgrades requiring compact SFP28 transceivers
Key specifications
 Interface type: SFP28 (SFP+ compatible form factor for 25GbE)
 Maximum data transfer rate: 25000 Mbit/s (25 Gbit/s)
 Optical connection: LC duplex multimode fiber (short-range optics)
 Typical operational wavelength: 850 nm (first optical window, multimode)
 Monitoring: Digital Diagnostic Monitoring (DDM/DOM) support
 Weight: approximately 0.04 kg
How to use
Install the BlueOptics SFP28-25G-ESR-CS-BO by inserting the module into a compatible SFP28 port on your switch, router, or network interface card following the host device manufacturer’s hot-swap and ESD procedures. Connect an appropriate LC duplex multimode patch cable between transceivers or to a patch panel. Verify link negotiation and 25 Gbit/s operation through the host device management interface. Use the DDM/DOM registers to read real-time diagnostic parameters for verification and troubleshooting as needed.
Usage recommendations
Use high-quality OM3/OM4 multimode fiber and LC duplex patch cables for reliable short-range 25GbE links. Ensure firmware and hardware compatibility with the host device and check the device’s SFP28 support policy prior to deployment. Monitor temperature and optical power values via DDM to detect potential issues early and to maintain consistent performance.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP28 |
| Maximum data transfer rate | 25000 Mbit/s |
| Fiber optic connector | LC |
| Maximum transfer distance | 300 m |
| Digital Diagnostics Monitoring (DDM) | Yes |
| Rx wavelength (max) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |
| SFP transceiver standard | ESR |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.04 kg |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 50 g |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

## FAQ

### How much does the SFP28 transceiver BlueOptics SFP28-25G-ESR-CS-BO cost, and is it available for purchase?

The price is 65.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 717 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 12.08.2026 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. 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 BlueOptics 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 BlueOptics 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: interface type, maximum data transfer rate, weight, 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/5039579/64341555_large.webp