# SFP28 Transceiver BlueOptics BO27O856S1D (4TC7A88638-BO) — LC-Duplex, 10G/25GBASE-SR, Multimode 850nm, 100m, DDM, 0–70°C

**URL:** https://aio.lv/en/product--blueoptics-4tc7a88638-bo--11698291
**Data updated:** 2026-02-25 16:42 (EET)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** 4TC7A88638-BO
**EAN:** 4063232346861
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 58.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 48.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-4tc7a88638-bo--11698291

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Compact SFP28 optical transceiver BlueOptics BO27O856S1D (MPN 4TC7A88638-BO) for 10G and 25GBASE-SR links over multimode fiber. Operates at 850 nm with LC-duplex connectors, reach up to 100 meters and supports digital diagnostics monitoring (DDM). Industrial temperature range 0°C to +70°C; suitable for data center uplinks, switch interconnects and short-range fiber links.

## Long description

The BlueOptics BO27O856S1D SFP28 transceiver is a compact optical module designed for short-range 10G and 25GBASE-SR links over multimode fiber. It uses an 850 nm VCSEL light source and LC-duplex connectors to deliver reliable transmission up to 100 meters on suitable multimode cabling. The module supports Digital Diagnostics Monitoring (DDM) for real-time monitoring of optical parameters and is rated for operation across an industrial temperature range of 0 to 70°C.
Advantages
This SFP28 transceiver provides compatibility with both 10G and 25GBASE-SR standards, enabling flexible deployment in modern high-speed networks. Its LC-duplex interface and multimode operation simplify integration into existing data center and campus fiber infrastructures. Built-in DDM allows monitoring of temperature, optical power and other key metrics to assist with link management and troubleshooting. The compact SFP28 form factor saves port space and supports high-density switch and server interconnects.
Suitable for
Data center uplinks and switch-to-switch connections within racks and across short spans
Server-to-switch fiber links requiring 10G or 25G speeds
Campus backbone segments and enterprise LANs using multimode fiber
Short-range fiber installations where industrial temperature tolerance is required
Key specifications
Form factor: SFP28 (small form-factor pluggable)
Optical mode: Multimode fiber (MMF)
Wavelength: 850 nm
Maximum reach: up to 100 meters on OM3/OM4 multimode fiber
Supported data rates: compatible with 10GBASE-SR and 25GBASE-SR
Connector type: LC duplex
Digital Diagnostics Monitoring: supported (DDM)
Operating temperature range: 0°C to +70°C
How to use
Insert the transceiver into an SFP28-compatible port on a switch, server NIC or media converter following the host device manufacturer’s instructions. Connect LC-duplex multimode fiber patch cords, observing correct transmit/receive orientation. Verify link status on the host device and use the DDM interface to check optical power, temperature and other diagnostics through supported management tools. Ensure the fiber type and distance do not exceed the specified 100 meter reach for reliable performance.
Usage recommendations
For optimal results, use OM3 or OM4 multimode fiber and high-quality LC duplex patch cords. Confirm host equipment supports SFP28 modules and the required 10G/25GBASE-SR operation. Monitor DDM values after installation to identify potential issues with connectors, patch cords or bend losses, and maintain a clean fiber end-face to prevent signal degradation.

## FAQ

### How much does the BlueOptics SFP28 BO27O856S1D (4TC7A88638-BO) cost, and is it available for purchase?

The price is 58.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 260 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 23.07.2026 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. 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/11698291/67078667_large.webp