# BlueOptics QSFP28 Transceiver QSFP28-LR4-AJ-BO, 100GBASE-LR4, LC-Duplex, Singlemode, 4xWDM, 10 km, DDM, 0–70°C

**URL:** https://aio.lv/en/product--blueoptics-qsfp28-lr4-aj-bo--12263090
**Data updated:** 2026-04-14 22:34 (EEST)
**Category:** Network Media Converters
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP28-LR4-AJ-BO
**EAN:** 4063232351452
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 430.99 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 356.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfp28-lr4-aj-bo--12263090

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

BlueOptics QSFP28-LR4-AJ-BO is a 100G QSFP28 transceiver module for singlemode fiber links using LC-duplex connectors. It implements 100GBASE-LR4 with 4xWDM channels and supports transmission distances up to 10 km. The module includes DDM for monitoring and operates in the 0–70°C temperature range. Suitable for data center uplinks and carrier networks.

## Long description

BlueOptics QSFP28-LR4-AJ-BO is a 100G QSFP28 transceiver module designed for singlemode fiber links using LC-duplex connectors. It implements the 100GBASE-LR4 standard with 4xWDM channels to carry four 25 Gbps lanes over a single fiber pair, enabling transmission distances up to 10 km. The module includes Digital Diagnostic Monitoring (DDM) to report operating parameters and is specified to operate in an ambient temperature range of 0–70°C. Intended for data center uplinks and carrier aggregation, this transceiver provides a compact interface for high-capacity network interconnects.
Advantages
The transceiver supports the 100GBASE-LR4 specification with 4xWDM, allowing aggregation of four 25 Gbps channels into a single QSFP28 form factor. LC-duplex singlemode connectivity permits use with standard patch cords and fiber infrastructure. Built-in DDM enables real-time monitoring of optical power, temperature and supply voltage, which helps with diagnostics and link management. The module's 10 km reach covers common access and metro links while the 0–70°C operating range suits typical indoor datacenter environments.
Suitable for
 Data center uplink and spine-to-leaf connections requiring 100 Gbps bandwidth
 Carrier and metro aggregation links up to 10 km over singlemode fiber
 Network equipment with QSFP28 ports and LC-duplex optical interfaces
 Environments where remote monitoring of transceiver parameters via DDM is needed
When it may not be suitable
This transceiver is not suitable for multimode fiber installations or for links that require distances beyond 10 km. It is intended for devices with QSFP28-compatible ports; it will not work in equipment that lacks support for QSFP28 form factor or 100GBASE-LR4 signaling. The operating temperature range (0–70°C) may be inadequate for outdoor or industrial deployments that require extended temperature specifications.
Key specifications
 Form factor: QSFP28
 Standard: 100GBASE-LR4
 Connector type: LC-duplex
 Fiber type: Singlemode
 WDM channels: 4×WDM (four 25 Gbps lanes)
 Maximum transmission distance: up to 10 km
 Monitoring: Digital Diagnostic Monitoring (DDM)
 Operating temperature: 0–70°C
How to use
Install the QSFP28 transceiver into a compatible QSFP28 port on your switch or router according to the host device's installation instructions. Connect singlemode LC-duplex patch cords between the module and the fiber patch panel or remote device. Verify link status and parameters using the host’s management interface; DDM provides readouts for optical power, temperature and voltage. Ensure the connected equipment is configured for 100G operation and that fiber polarity and LC connector cleanliness meet standard optical practice. Follow your network equipment vendor guidance when enabling or disabling ports and when performing transceiver diagnostics.
What to consider before purchase
 Verify your switch or router supports QSFP28 modules and 100GBASE-LR4 signaling
 Confirm the link distance does not exceed 10 km and that singlemode fiber is in use
 Ensure LC-duplex connectors match your cabling and patch panel hardware
 Check operating temperature requirements for your deployment environment
Usage recommendations
For reliable performance, keep LC connector endfaces clean, use certified singlemode fiber cables, and monitor DDM parameters after installation. When integrating into a multi-vendor network, verify interoperability with the host device and apply any vendor-specific compatibility settings if necessary.

## FAQ

### How much does the BlueOptics QSFP28-LR4-AJ-BO 100G QSFP28 Transceiver cost, and is it available for purchase?

The price is 430.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 455 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 04.08.2026 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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