# CBO Transceiver SFP28-25G-ESR BO27Q856S3D 25G Fiber Optic SFP28 Module

**URL:** https://aio.lv/en/product--blueoptics-sfp28-25g-esr-mt-bo--4469559
**Data updated:** 2026-02-25 16:34 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** SFP28-25G-ESR-MT-BO
**EAN:** 4063232073309
**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-mt-bo--4469559

## 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

CBO SFP28-25G-ESR BO27Q856S3D is a 25 Gigabit fiber-optic SFP28 transceiver module designed for high-speed data links. It provides 25G connectivity for switches, routers and servers using fiber optics. Suitable for short- to medium-range optical networks, it supports hot-pluggable installation and standard SFP28 ports, enabling quick upgrades and reliable low-latency links for data centers and enterprise networks.

## Long description

The CBO Transceiver SFP28-25G-ESR BO27Q856S3D 25G Fiber Optic SFP28 Module is a compact, hot-pluggable optical transceiver designed to deliver 25 Gigabit Ethernet connectivity over single-mode or specified multimode fiber for short- to medium-range links. Intended for installation in standard SFP28 ports, the module provides a low-latency physical link for switches, routers and servers in data center and enterprise networks while supporting straightforward upgrades of existing infrastructure.
Advantages
This SFP28 module offers 25G line rate performance in a small form factor that fits SFP28-compatible equipment, enabling denser port deployment without changing chassis or line cards. Its hot-pluggable design allows replacement or upgrade without powering down the host device, reducing maintenance windows. The module is engineered for reliable optical links with consistent data throughput and low latency suitable for high-performance networking environments.
Suitable for
25 Gigabit Ethernet connections between switches and aggregation devices
Server uplinks and direct server-to-switch links in data centers
Short- to medium-distance optical links within campus and enterprise networks
Upgrading 10G ports to 25G where SFP28 slots are available
Key specifications
Form factor: SFP28 small form-factor pluggable
Data rate: 25 Gigabit per second
Optical interface: fiber optic duplex (LC) compatible
Reach: designed for short- to medium-range optical links (see vendor documentation for exact distance based on fiber type)
Compatibility: designed for standard SFP28 ports in switches, routers and servers
Installation: hot-pluggable
Latency: optimized for low-latency data transmission
How to use
Install the transceiver into a compatible SFP28 port on the target switch, router or server by aligning the module and gently inserting until it clicks into place. Connect the appropriate duplex fiber patch cable (LC) to the transceiver's optical ports, ensuring correct transmit/receive orientation. Configure the host device's interface settings as required for 25G operation and monitor link status through the device management interface. To remove the module, power down the link if recommended by the equipment vendor, release the latch and pull the module straight out.
Usage recommendations
Use single-mode or the specified multimode fiber and LC duplex patch cables that meet the required attenuation and bandwidth characteristics for the intended reach. Verify compatibility with the host device's firmware and transceiver support list, and follow electrostatic discharge (ESD) precautions during handling and installation to avoid damage to the optical interface.

## FAQ

### How much does the CBO SFP28-25G-ESR BO27Q856S3D 25G SFP28 Transceiver 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

## Image

https://aio.lv/img/cache/product/4469559/59854253_large.webp