# Network transceiver module BlueOptics QSFP+KT-LX4-BO QSFP 40 Gbit/s fiber optic

**URL:** https://aio.lv/en/product--blueoptics-qsfpkt-lx4-bo--7443883
**Data updated:** 2026-04-16 05:59 (EEST)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** QSFP+KT-LX4-BO
**EAN:** 4063232273655
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 499.99 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 413.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-qsfpkt-lx4-bo--7443883

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.89 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

BlueOptics QSFP+KT-LX4-BO is a QSFP form-factor fiber optic network transceiver module supporting up to 40000 Mbit/s (40 Gbit/s). Designed for QSFP interfaces, it enables high-speed 40 Gigabit Ethernet, Fibre Channel or SONET/SDH links in switches, routers and storage systems. Silver-colored module for single-mode fiber deployments and compatible with standard QSFP ports.

## Long description

BlueOptics QSFP+KT-LX4-BO is a QSFP form-factor fiber optic transceiver module that supports data rates up to 40 Gbit/s. The module is designed for QSFP interfaces and enables 40 Gigabit Ethernet, Fibre Channel over Ethernet or SDH/SONET links in switches, routers and storage systems. It uses an LC duplex connector and is intended for single‑mode fiber deployments; the silver-coloured module is compatible with standard QSFP ports that accept 40GBASE‑LX4 devices.
Advantages
The transceiver follows MSA QSFP mechanical and electrical standards and is built from high‑quality optical and electronic components to ensure long service life and reliable performance. It supports Digital Diagnostics Monitoring (DDM/DOM) for real‑time monitoring of supply voltage, laser bias current, transmit power, receive power and temperature. The LC duplex interface allows simultaneous transmit and receive over a two‑fibre link and the module is tested for compatibility with relevant hardware platforms that support the original QSFP 40GBASE‑LX4 devices.
Suitable for
40 Gigabit Ethernet links in data centre switches and routers
Fibre Channel over Ethernet or SAN interconnects at 40 Gbit/s
High‑speed SONET/SDH links and telecom installations
Single‑mode fiber runs up to the module's specified reach
When it may not be suitable
This single‑mode LX4 QSFP is not intended for multimode fiber installations that require MMF‑optimised optics; multimode deployments may require different transceivers. Also ensure the host hardware supports 40GBASE‑LX4 and the DDM/DOM functions if you require monitoring—otherwise diagnostic features may be unavailable.
Key specifications
Form factor: QSFP
Maximum data rate: 40 Gbit/s
Connector: LC duplex
Fiber type: single‑mode
Supported protocols: 40 Gigabit Ethernet, Fibre Channel over Ethernet, SDH/SONET
Module colour: silver
Weight: 0.04 kg
Digital Diagnostics Monitoring (DDM/DOM): supported (MSA SFF‑8472)
How to use
Insert the QSFP transceiver into a compatible QSFP slot on a switch, router or storage system that supports 40GBASE‑LX4. Connect an LC duplex single‑mode patch cable between transceivers or to a patch panel to establish the optical link. If monitoring is required, verify that the host hardware exposes DDM/DOM readouts to access supply voltage, laser bias, transmit/receive power and temperature values. Follow standard ESD handling and hot‑swap procedures recommended by the equipment vendor.
What to consider before purchase
Confirm the host device supports 40GBASE‑LX4 QSFP modules and the QSFP+ interface
Verify you require single‑mode optics and LC duplex connectors for your fiber run
Check whether DDM/DOM support is needed and supported by your hardware
Ensure cable type and length meet the link budget and required reach
Usage recommendations
For best results use high‑quality single‑mode LC duplex patch cords and, if possible, install the module into equipment that officially supports 40GBASE‑LX4. Regularly monitor DDM/DOM values to detect signal degradation early and follow manufacturer guidelines for ESD protection and module handling.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | QSFP |
| Maximum data transfer rate | 40000 Mbit/s |
| Fiber ethernet cabling technology | 40GBASE |
| Fiber optic connector | LC |
| Maximum transfer distance | 2000 m |
| Multi-mode fiber (MMF) supported | Yes |
| Single-mode fiber (SMF) supported | Yes |
| Coarse Wavelength Division Multiplexing (CWDM) | Yes |

### Network

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

### Operational conditions

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

### Features

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

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |
| Sustainability certificates | Federal Communications Commission (FCC), RoHS, CE |

### Packaging data

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

### Weight & dimensions

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

## FAQ

### How much does the BlueOptics QSFP+KT-LX4-BO QSFP 40 Gbit/s transceiver cost, and is it available for purchase?

The price is 499.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 05.08.2026 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.

## Image

https://aio.lv/img/cache/product/7443883/60259463_large.webp