# Transceiver CBO QSFP28-SR4 100G 850nm optical module

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-sr4-bo--4467160
**Data updated:** 2026-02-25 16:32 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-SR4-BO
**EAN:** 4063232063515
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 102.49 €
**Prices and availability valid until:** 2026-07-25 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-sr4-bo--4467160

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

CBO QSFP28-SR4 100G 850nm transceiver is a hot-pluggable optical module designed for 100 Gigabit Ethernet applications. It uses 850 nm multimode optics in a QSFP28 form factor, providing short-reach connectivity between switches, routers and servers. Suitable for data centers and enterprise networks where high-bandwidth, low-latency links over multimode fiber are required.

## Long description

The Transceiver CBO QSFP28-SR4 100G 850nm optical module is a hot-pluggable QSFP28 form-factor transceiver designed for short-reach 100 Gigabit Ethernet links. It operates at 850 nm using multimode fiber optics to provide high-bandwidth, low-latency connections between switches, routers and servers within data centers and enterprise network environments. The module supports parallel multi-mode transmission and is intended for use in top-of-rack, aggregation and spine network segments where short-distance, high-density interconnects are required.
Advantages
The module offers a compact QSFP28 package that enables four-channel 25 Gbps per lane operation for a total of 100 Gbps throughput while maintaining compatibility with standard QSFP28 ports. Its hot-pluggable design simplifies installation and replacement without powering down equipment. Using 850 nm multimode optics provides cost-effective short-reach performance with low power consumption and predictable signal behaviour over multimode fiber.
Suitable for
Short-reach interconnects in data centers (switch-to-switch, switch-to-server)
Top-of-rack and spine-aggregation links in enterprise networks
High-density 100G uplinks and cross-connects over multimode fiber
Key specifications
Form factor: QSFP28 (hot-pluggable)
Data rate: 100 Gigabit Ethernet (4 × 25 Gbps lanes)
Wavelength: 850 nm
Fiber type: Multimode fiber (MMF)
Reach: short-reach links over multimode cabling (typical data center distances)
Connector interface: MPO/MTP parallel fiber connector
Power consumption: low-power design suitable for high-density ports
How to use
Insert the QSFP28 module into a compatible QSFP28 port on a switch, router or server I/O module while the host device is powered on. Ensure the module is fully seated and locked, then connect the MPO/MTP multimode fiber cable to the module’s connector. Verify link status and speed via the host device management interface and confirm multimode fiber type and polarity are matched on both ends. For safe handling, avoid touching optical interfaces and follow electrostatic discharge (ESD) precautions when installing the transceiver.
Usage recommendations
Use the transceiver with recommended multimode fiber types (OM3/OM4) and qualified MPO/MTP cabling to achieve specified short-reach performance. Maintain clean connector end-faces and perform end-face inspection or cleaning before mating. Monitor link diagnostics through the host system and follow vendor guidelines for optical budget and channel operating conditions.

## FAQ

### How much does the CBO QSFP28-SR4 100G 850nm 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 — 1883 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 24.07.2026 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/4467160/59876499_large.webp