# QSFP+ Transceiver Module BlueOptics QSFP+KT-50SR4-BO 40000 Mbit/s

**URL:** https://aio.lv/en/product--blueoptics-qsfpkt-50sr4-bo--5040757
**Data updated:** 2026-02-25 16:37 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP+KT-50SR4-BO
**EAN:** 4063232245584
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 92.99 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 76.85 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfpkt-50sr4-bo--5040757

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.08.2026 | free |
| Pickup points | 19.08.2026 | 1.79 EUR |
| Courier delivery to door | 19.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics QSFP+KT-50SR4-BO is a fiber optic transceiver module with a maximum data transfer rate of 40000 Mbit/s. It features a QSFP interface and is compliant with CE, RoHS, and FCC standards. Weighing only 20 g, it is designed for high-speed data transmission in networking applications.

## Long description

The BlueOptics QSFP+KT-50SR4-BO is a QSFP fiber optic transceiver module designed for short-range multimode fiber links with a maximum data rate of 40000 Mbit/s. The module is a compact, silver-coloured unit weighing approximately 20 g and complies with CE, RoHS and FCC standards. It uses a QSFP interface and an MPO/MTP connector to support 40GBASE-SR4 signaling over multimode fiber with 850 nm transmit and receive wavelengths.
Advantages
This transceiver supports 40 Gbit/s Ethernet and related high-speed protocols while keeping a small form factor suitable for dense networking equipment. Compliance with industry standards and the use of MPO/MTP connectivity enable interoperability with hardware that follows QSFP MSA specifications. The module offers digital diagnostics (DDM/DOM) capabilities for monitoring parameters such as supply voltage, laser bias current, optical output/input power and temperature when used in compatible host hardware.
Suitable for
Short-range 40G Ethernet links over multimode fiber
Data center uplinks and switch-to-switch interconnects
High-speed connections between storage systems and routers
Key specifications
Interface type: QSFP (Quad Small Form-factor Pluggable)
Maximum data transfer rate: 40000 Mbit/s (40 Gbit/s)
Optical wavelength: 850 nm (transmit and receive)
Connector type: MPO/MTP for parallel multimode fiber
Supported link distance: typical for 40GBASE-SR4 multimode deployments (up to approximately 100–150 m depending on fiber type and modal bandwidth)
Form factor: QSFP+ compact module
Product colour: Silver
Weight: approx. 0.02 kg
Standards compliance: CE, RoHS, FCC
How to use
Install the BlueOptics QSFP+KT-50SR4-BO by inserting the QSFP module into a compatible QSFP port on a switch, router or other networking device while the host system is powered down or following the host vendor's hot-swap instructions. Connect an MPO/MTP multimode fiber patch cord to the module's MPO/MTP connector and route the fibers according to the network design. If the host system supports digital diagnostics monitoring (DDM/DOM), use the management interface to check optical parameters and health information to verify proper operation.
Usage recommendations
Use high-quality OM3/OM4 multimode fiber and MPO/MTP patch cords rated for 40GBASE-SR4 to achieve the specified reach and low insertion loss. Confirm host compatibility with QSFP+ modules and enable DDM/DOM support in the device firmware to monitor performance. Avoid excessive bending and contamination of connector endfaces; follow established cleaning and handling procedures for fiber optics.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| Fiber ethernet cabling technology | 40GBASE |
| Fiber optic connector | MTP/MPO |
| Maximum transfer distance | 150 m |
| Rx wavelength (max) | 850 nm |
| Rx wavelength (min) | 850 nm |
| Tx wavelength (min) | 850 nm |
| Tx wavelength (max) | 850 nm |
| Multi-mode fiber (MMF) supported | Yes |

### Network

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

### Packaging content

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

### Operational conditions

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

### Features

| Feature | Value |
|---|---|
| Form factor | QSFP |
| Product colour | Silver |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 30 g |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.02 kg |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | Federal Communications Commission (FCC), RoHS, CE |

## FAQ

### How much does the QSFP+ Transceiver Module BlueOptics QSFP+KT-50SR4-BO cost, and is it available for purchase?

The price is 92.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 423 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 14.08.2026 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, maximum data transfer rate, 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.

### Where can I download the instructions for QSFP+ Transceiver Module BlueOptics QSFP+KT-50SR4-BO?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/5040757/64348162_large.webp