# Fiber Optic Transceiver CBO QSFP28-100G-SR4 100G SR4 multimode

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-100g-sr4-ql-bo--4466723
**Data updated:** 2026-02-24 11:00 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-100G-SR4-QL-BO
**EAN:** 4063232065274
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 102.49 €
**Prices and availability valid until:** 2026-08-03 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-ql-bo--4466723

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-100G-SR4 is a QSFP28 fiber optic transceiver module for 100 Gigabit Ethernet SR4 links. Designed for multimode fiber short-reach connections, it provides four lanes of 25 Gbps and supports high-density data center uplinks and switches. Use cases include server-to-switch and switch-to-switch connections where compact, hot-pluggable 100G optics are required.

## Long description

CBO QSFP28-100G-SR4 100G SR4 multimode is a QSFP28 fiber optic transceiver module designed for 100 Gigabit Ethernet short-reach multimode links. The module supports four parallel lanes at 25 Gbps each, enabling a total aggregated bandwidth of 100 Gbps in a compact, hot-pluggable QSFP28 form factor. It is intended for use in high-density data center environments where short-reach, multimode fiber interconnects are required for server-to-switch and switch-to-switch uplinks.
Advantages
The transceiver offers high-density 100G connectivity in a small QSFP28 package, supporting easy hot-swap installation without powering down equipment. Its multimode SR4 design reduces the cost of short-reach links by using MPO/MTP parallel fiber connections and leverages standard IEEE 802.3bm-compatible signaling for interoperability with supporting switches and network equipment. The module is suitable for environments that require predictable 100G performance over multimode fiber with minimal configuration.
Suitable for
 Data center uplinks between switches and aggregation devices
 High-bandwidth server-to-switch connections within the same equipment room
 Short-reach campus backbone links using multimode fiber
 High-density switch ports where space and power efficiency are important
Key specifications
 Form factor: QSFP28 (hot-pluggable)
 Data rate: 100 Gbps aggregated (4 x 25 Gbps lanes)
 Link type: Short Reach (SR4) for multimode fiber
 Optical interface: MPO/MTP parallel fiber connector
 Wavelength: multimode optics optimized for 850 nm
 Typical reach: short-reach distances over multimode fiber (OM3/OM4 dependent)
 Protocol compatibility: 100 Gigabit Ethernet (IEEE 802.3bm and related standards)
How to use
Install the QSFP28 transceiver into a compatible QSFP28 slot on a switch or server NIC while the host device is powered on, taking anti-static precautions. Connect MPO/MTP multimode fiber patch cables to the module's optical interface, observing proper fiber polarity and channel mapping for SR4 parallel lanes. The module will negotiate link parameters with connected equipment; verify link status and diagnostics through the host's management interface. If necessary, consult the network equipment documentation for transceiver compatibility lists and firmware recommendations.
Usage recommendations
 For reliable short-reach 100G links, use high-quality OM3 or OM4 multimode fiber and MPO/MTP connectors terminated and tested to appropriate standards. Keep fiber connectors clean, avoid sharp bends, and verify channel mapping when deploying parallel SR4 links to ensure correct lane alignment and optimal performance.

## FAQ

### How much does the CBO QSFP28-100G-SR4 Fiber Optic Transceiver 100G 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 — 1855 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 03.08.2026 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

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