# CBO QSFP28-100G-SR4-DE-BO QSFP28 100G SR4 850 nm multimode fiber transceiver

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-de-bo--4466711
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-100G-SR4-DE-BO
**EAN:** 4063232161730
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 102.49 €
**Prices and availability valid until:** 2026-08-19 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-de-bo--4466711

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 18.08.2026 | free |
| Pickup points | 21.08.2026 | 1.79 EUR |
| Courier delivery to door | 21.08.2026 | 4.99 EUR |

## Summary description

QSFP28 CBO QSFP28-100G-SR4-DE-BO is a 100 Gbit/s short-reach (SR4) multimode fiber transceiver operating at 850 nm. Designed for high-density data center and switch-to-switch links, it provides four parallel lanes for 100G connectivity over multimode fiber. Use it to upgrade or replace QSFP28 ports for 100G Ethernet or InfiniBand interconnects.

## Long description

QSFP28 CBO QSFP28-100G-SR4-DE-BO is a 100 Gbit/s short-reach multimode fiber transceiver operating at 850 nm. It implements the SR4 standard with four parallel optical lanes to deliver 100G connectivity over multimode fiber links. The module is intended for use in high-density data center environments and switch-to-switch connections where short-reach, high-bandwidth links are required.
Advantages
The transceiver offers 100 Gbit/s aggregate bandwidth through four 25 Gbit/s lanes, enabling straightforward upgrade paths for existing QSFP28 ports. Its operation at 850 nm is optimized for multimode fiber, providing compatibility with established OM3/OM4 cabling plants. The compact QSFP28 form factor allows for high port density on switches and routers while supporting hot-plug replacement for minimal service disruption.
Suitable for
 Data center uplinks and spine-leaf switch interconnects
 Short-reach switch-to-switch 100G Ethernet links
 High-performance computing (HPC) clusters and InfiniBand fabrics using multimode fiber
 Equipment upgrades where QSFP28 ports are present and 100G throughput is required
Key specifications
 Data rate: 100 Gbit/s aggregate (four parallel 25 Gbit/s lanes)
 Wavelength: 850 nm
 Fiber type: Multimode fiber compatibility (OM3/OM4)
 Reach: Short-reach (SR4) distances over multimode fiber
 Form factor: QSFP28 hot-pluggable module
 Interface: Parallel optical lanes (4x25G)
How to use
Install the QSFP28 transceiver into a compatible QSFP28 port on a switch, router or server adapter, ensuring the module is fully seated and latched according to the host device instructions. Connect appropriate multimode MPO/MTP patch cords to the module and route them following data center cable management best practices. Verify link status and speed through the host device management interface and ensure the remote end uses a matching SR4-compatible transceiver and multimode fiber type.
Usage recommendations
Use OM3 or OM4 multimode fiber to achieve nominal SR4 short-reach distances and maintain correct polarity and MPO/MTP connector orientation. Observe electrostatic discharge (ESD) precautions when handling the module and protect optical connector endfaces from contamination by using dust caps when not connected.

## FAQ

### How much does the CBO QSFP28-100G-SR4-DE-BO QSFP28 100G 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 — 1834 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 18.08.2026 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/4466711/59862686_large.webp