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header-product QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-FR-BO 40 Mbit/s 850 nm
119.49 €

QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-FR-BO 40 Mbit/s 850 nm

QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 1
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 2
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 3
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 4
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 5
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 6
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 7
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 8
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 1
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 2
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 3
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 4
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 5
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 6
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 7
QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO Photo 8
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QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-FR-BO 40 Mbit/s 850 nm

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Short description

The BlueOptics QSFP-40G-ESR4-FR-BO is a fiber optic transceiver module designed for high-speed data transfer. It supports a maximum data rate of 40 Mbit/s and operates at a wavelength of 850 nm. With a mean time between failures (MTBF) of 1,000,000 hours, it ensures reliability and longevity. Weighing only 40 g, this compact module is ideal for various networking applications.
Available for order: 86 pcs.
Warranty: 2 Years
SKU: 6185020
Manufacturer: BlueOptics
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

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Cost

1.79 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
25.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
28.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.04 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
28.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
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Product information

Description

The BlueOptics QSFP-40G-ESR4-FR-BO is a QSFP fiber optic transceiver module designed for 40 Gigabit Ethernet links over multimode fiber. It supports a maximum data rate of 40 Mbit/s at an operating wavelength of 850 nm and a maximum link distance of up to 300 m using MTP/MPO connectors. The compact module weighs approximately 40 g and includes support for digital diagnostics (DDM/DOM) to monitor supply voltage, laser bias current, transmitter output power, received input power and temperature in real time. The module is designed to comply with QSFP MSA mechanical and electrical specifications for broad interoperability with network switches, routers, storage systems and other devices that accept QSFP-40G transceivers.

Advantages

This BlueOptics QSFP transceiver provides standardized QSFP form-factor compatibility and MTP/MPO multimode fiber connectivity for short-range 40G links, offering reliable performance with an MTBF of approximately 1,000,000 hours. Integrated digital diagnostics simplify maintenance and fault finding by reporting electrical and optical parameters. The small, hot-pluggable module supports common high-speed protocols such as Ethernet and Fibre Channel over Ethernet and is built to industry standards for CE and RoHS compliance.

Suitable for

  • 40 Gigabit Ethernet uplinks between switches and aggregation equipment
  • High-speed interconnects in data center switch-to-switch fabrics
  • Connections between routers, storage arrays and server clusters over multimode fiber
  • Short-range fiber links in enterprise and campus networks (up to 300 m)

Key specifications

  • Maximum data transfer rate: 40 Mbit/s
  • Wavelength: 850 nm (transmit and receive)
  • Maximum transfer distance: up to 300 m over multimode fiber
  • Interface type: 40 Gigabit Ethernet (QSFP)
  • Fiber connector: MTP/MPO
  • Digital Diagnostics Monitoring (DDM/DOM) support
  • Typical weight: 0.04 kg
  • Compliance: QSFP MSA mechanical/electrical profile, CE and RoHS

How to use

Install the BlueOptics QSFP-40G-ESR4-FR-BO into a compatible QSFP slot on your network device while the device is powered on or per the vendor's hot-plug guidance. Connect an appropriate MTP/MPO multimode fiber patch cord to the transceiver and to the destination device or patch panel. Ensure the host hardware supports 40G QSFP transceivers and, if you require DDM/DOM telemetry, verify that the host exposes those diagnostics. Follow the equipment vendor's instructions for port configuration and link negotiation to enable the 40G link.

Usage recommendations

For optimal performance, use high-quality multimode fiber and MTP/MPO patch cords rated for 850 nm transmission, keep optical connectors clean and verified, and confirm your switch/router platform firmware supports 40GBASE-ESR4 QSFP modules and DDM functions. If interoperability is critical, test the transceiver in your hardware before wide deployment.

Specifications

Wavelength: The distance over which a wave repeats itself. The wavelength determines the characteristics of the wave e.g. red light has a different wavelength to blue light.
850 nm
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
300 m
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
40 Mbit/s
Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
MTP/MPO
All features
Interface type:
QSFP
Ethernet LAN: An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Yes
Number of products included: The number of products that are included in the package.
1 pc(s)
SFP transceiver type:
Fiber optic
Multi-mode fiber (MMF) supported:
Yes

Packaging data

Package weight: Weight of the packaged product.
50 g

Packaging content

Manual:
Yes

Operational conditions

Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 70

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.04 kg

Ports & interfaces

Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
MTP/MPO

Performance

Mean time between failures (MTBF): Statistical model used to indicate product/mechanism reliability; expressed in hours and percentage of duty cycle. This number (in hours) does not indicate the mean time before failure for a single unit/mechanism.
1000000 h
Rx wavelength (max):
850 nm
Tx wavelength (max):
850 nm
Wavelength: The distance over which a wave repeats itself. The wavelength determines the characteristics of the wave e.g. red light has a different wavelength to blue light.
850 nm
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
300 m

Network

Ethernet interface type:
40 Gigabit Ethernet
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
40 Mbit/s

Description

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Customer reviews

Customer questions

FAQ

How much does the QSFP Transceiver BlueOptics QSFP-40G-ESR4-FR-BO cost, and is it available for purchase?

The price is 119.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 86 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 25.08.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: wavelength, maximum transfer distance, maximum data transfer rate, fiber optic connector, 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.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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