# QSFP28 transceiver module BlueOptics Q28-503-BO CWDM 40g

**URL:** https://aio.lv/en/product--blueoptics-q28-503-bo--4466100
**Data updated:** 2026-02-25 16:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** Q28-503-BO
**EAN:** 4063232644820
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 430.99 €
**Prices and availability valid until:** 2026-08-22 23:59
**Price without VAT (21%):** 356.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-q28-503-bo--4466100

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.08.2026 | free |
| Pickup points | 25.08.2026 | 1.79 EUR |
| Courier delivery to door | 25.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics Q28-503-BO is a QSFP28 fiber optic transceiver module designed for high-speed data transmission. It features a CWDM standard and is made of durable aluminum, weighing 40g. This module is ideal for network applications requiring reliable and efficient performance.

## Long description

The BlueOptics Q28-503-BO CWDM 40g is a QSFP28 fiber optic transceiver module designed for high-speed optical data transmission over single-mode fiber. The module follows CWDM multiplexing principles and fits QSFP28 interfaces, providing a compact aluminum housing with a weight of 40 g. It supports LC Duplex connectivity and is intended for use in network equipment that accepts QSFP28 form-factor optical modules.
Advantages
The BlueOptics Q28-503-BO offers QSFP28 compatibility and a CWDM-enabled transmitter and receiver for wavelength-multiplexed single-mode links. Its aluminum housing provides physical durability while keeping the module lightweight. The module supports standardized optical form-factor dimensions and LC Duplex connectors, enabling interoperability with a wide range of switches, routers and storage devices that accept QSFP28 optical transceivers. Digital diagnostics (DDM/DOM) support enables real-time monitoring of key operational parameters when the host equipment supports this feature.
Suitable for
High-speed Ethernet and Fibre Channel over Ethernet links up to 100G aggregated throughput
Long-reach single-mode fiber connections over distances up to several kilometers
Integration into switches, routers, storage systems and load-balancing appliances with QSFP28 ports
Network environments requiring CWDM wavelength multiplexing and LC Duplex interfaces
Key specifications
Interface type: QSFP28 form factor
Optical standard: CWDM (coarse wavelength division multiplexing)
Connector type: LC Duplex
Housing material and color: aluminium
Weight: 0.04 kg (40 g)
Supported protocols: Ethernet and Fibre Channel over Ethernet compatible high-speed applications
Digital diagnostics: DDM/DOM support (host device must support feature)
How to use
Install the BlueOptics Q28-503-BO into a compatible QSFP28 port on your networking device following the device manufacturer’s insertion and removal procedures. Connect LC Duplex single-mode fiber patch cords to the module’s connectors, ensuring correct transmit/receive orientation and appropriate fiber patching or patch panel routing. Verify that the host device recognizes the module and, if needed, enable or check DDM/DOM monitoring in the equipment management interface to observe operational parameters such as supply voltage, optical power and temperature.
Usage recommendations
For reliable performance, use high-quality single-mode LC Duplex fiber cabling and keep connectors clean and properly seated. Confirm that the host hardware and firmware support the QSFP28 form factor and DDM/DOM functions. Observe manufacturer guidelines for electrostatic discharge protection during installation and avoid excessive bending of fiber near the connector to maintain optimal signal integrity.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP28 |
| Ethernet interface type | 100 Gigabit Ethernet |
| Fiber ethernet cabling technology | 100GBASE |
| Ethernet LAN | Yes |
| Maximum transfer distance | 10000 m |
| SFP transceiver standard | CWDM |
| Coarse Wavelength Division Multiplexing (CWDM) | Yes |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.04 kg |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 50 g |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Features

| Feature | Value |
|---|---|
| Product colour | Aluminium |

## FAQ

### How much does the QSFP28 transceiver module BlueOptics Q28-503-BO 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 — 449 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 20.08.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4466100/64292440_large.webp