# Fiber optic transceiver CBO QSFP28 BO28L859S1D 100G SR4 for short-reach multimode links

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-ix-bo--4466714
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-100G-SR4-IX-BO
**EAN:** 4063232065366
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 102.49 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 84.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-ix-bo--4466714

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.89 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28 BO28L859S1D is a 100G SR4 fiber optic transceiver designed for short-reach multimode links. It provides high-speed quad-lane 100 Gigabit Ethernet connectivity using SR4 optics, suitable for data center interconnects, switch-to-switch links, and server uplinks. The module supports hot-plug installation and industry-standard QSFP28 form factor for easy integration and reduced downtime.

## Long description

The Fiber optic transceiver CBO QSFP28 BO28L859S1D 100G SR4 for short-reach multimode links is a QSFP28-form factor optical module designed to deliver quad-lane 100 Gigabit Ethernet over multimode fiber. Intended for short-reach SR4 connections, the transceiver provides four parallel lanes aggregated to support 100G links in data center environments, switch-to-switch interconnects and high-speed server uplinks. The module supports hot-pluggable installation and conforms to standard QSFP28 mechanical and electrical interfaces for compatibility with a wide range of networking equipment.
Advantages
This 100G SR4 transceiver offers compact QSFP28 packaging that reduces port density and rack space compared with older form factors. Its design enables straightforward integration into existing multimode fiber infrastructures and minimizes downtime through hot-pluggable operation. Built for short-reach multimode links, the module balances cost and performance for typical intra-rack and adjacent-rack connections and supports industry-standard signaling for predictable interoperability.
Suitable for
Data center top-of-rack and spine switch interconnects over multimode fiber
Switch-to-switch links within a single facility or campus
High-speed server uplinks and aggregation ports
Short-reach multimode fiber infrastructure (OM3/OM4)
Key specifications
Optical interface: SR4 multimode parallel optics
Data rate: 100 Gigabit Ethernet (aggregated over four lanes)
Form factor: QSFP28 hot-pluggable module
Reach: short-range multimode links (designed for OM3/OM4 fibers)
Connector type: MPO/MTP parallel fiber connector
Operating environment: typical data center temperature and humidity ranges
How to use
Install the module into a compatible QSFP28 host port while the host device is powered on or off, following the host vendor’s guidance for hot-plug procedures. Connect the MPO/MTP multimode fiber cable to the module’s connector, ensuring correct polarity and using appropriate OM3 or OM4 patch cords for short-reach SR4 links. Verify link status and speed through the switch or server management interface and monitor optical signal parameters where available to confirm proper operation.
Usage recommendations
Use within data center environments with certified OM3 or OM4 multimode fiber for optimal performance; avoid single-mode fiber or unsupported cable types. Maintain clean connector end-faces, follow ESD precautions when handling the transceiver, and consult the equipment vendor’s compatibility list to ensure full interoperability.

## FAQ

### How much does the CBO QSFP28 BO28L859S1D 100G SR4 transceiver cost, and is it available for purchase?

The price is 102.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1851 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 05.08.2026 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/4466714/59856776_large.webp