# Transceiver CBO QSFP28-100G-SR4 compatible BO28L859S1D Fiber Optic 100G, multimode short-reach

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-nk-bo--4466720
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-100G-SR4-NK-BO
**EAN:** 4063232065304
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 101.99 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 84.29 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-nk-bo--4466720

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Compatible CBO QSFP28-100G-SR4 transceiver (model BO28L859S1D) is a fiber-optic 100G short-reach module designed for multimode links. It provides four-lane 25G optical interfaces for high-speed data centers, switches and aggregation equipment. Use cases include server interconnects and rack-to-rack connectivity where short-distance multimode fiber is deployed. Benefits: compact QSFP28 form factor, hot-pluggable installation and industry-compatible 100G SR4 operation.

## Long description

Compatible CBO QSFP28-100G-SR4 transceiver (model BO28L859S1D) is a fiber-optic 100G short-reach module designed for multimode links. The module delivers four parallel 25G optical lanes in a compact QSFP28 form factor, providing a hot-pluggable solution for high-density environments. It is intended for use in data centers, enterprise switches and aggregation equipment where short-distance multimode fiber cabling is deployed.
Advantages
This QSFP28 100G SR4 transceiver supports standardized 100 Gigabit SR4 operation over multimode fiber, enabling interoperability with compatible switching and routing hardware. Its QSFP28 form factor and hot-pluggable design simplify installation and replacement without powering down systems. The module offers a balance of high port density, multimode short-reach performance and predictable power characteristics suitable for rack-to-rack and server interconnect scenarios.
Suitable for
Short-reach 100G multimode links in data centers
Server-to-switch and switch-to-switch rack connectivity
High-density aggregation and leaf-spine network architectures
Environments using OM3/OM4 multimode fiber for distances typical of SR4 modules
Key specifications
Form factor: QSFP28, 4-lane 25G optical interface
Data rate: 100 Gbit/s aggregate
Fiber type: multimode fiber compatibility
Reach: short-reach multimode distances (designed for rack-to-rack and intra-site links)
Installation: hot-pluggable
How to use
Insert the QSFP28 transceiver into a compatible QSFP28 port on switches, routers or network interface cards following the host equipment manufacturer’s guidelines. Connect the module to multimode fiber cabling using an appropriate MPO/MTP trunk or harness that matches the transceiver’s four-lane fiber interface. After physical installation, verify link status and performance via the host device management interface and ensure transceiver settings are accepted by the equipment.
Usage recommendations
For reliable operation, use multimode fiber of suitable grade (for example OM3 or OM4) and maintain proper cable management to avoid excessive bend radius or contamination of fiber endfaces. Confirm compatibility with the host system and test links after installation to ensure expected throughput and signal integrity.

## FAQ

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

The price is 101.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1850 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 10.08.2026 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/4466720/59873312_large.webp