StarTech 40GBase-LR4 QSFP+ SM

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Delivered between 26.2.2026 and 2.4.2026
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Product details

40 Gbps | Single-Mode Fiber | LC | 10 km | Lifetime Warranty

The QSFP40LR4ST is an MSA-compliant fiber optic QSFP+ transceiver specifically designed, programmed, and tested for use with 40GBASE-LR4 compatible MSA switches and routers. The QSFP+ transceiver module supports a maximum distance of up to 10 km and provides reliable 40-GbE connectivity over fiber optic cables.

Technical Specifications:

Wavelength: 1270 nm to 1330 nm

Maximum Data Rate: 40 Gbit/s

Type: Single-Mode Fiber

Connector Type: LC Connector

Maximum Transmission Distance: 10 km

MTBF: 1,489,426 hours

Power Consumption: less than 2.5 Watts

DDM: Yes

This QSFP+ fiber module is hot-swappable, allowing upgrades and replacements to be carried out seamlessly with minimal network downtime.

StarTech.com SFPs

All StarTech.com SFP and SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a variety of SFP modules and SFP direct attach cables that provide the convenience and reliability you need to ensure dependable network performance.

The StarTech.com Advantage

  • Provides reliable 40 Gbit/s connections for 40GBASE-LR4 compliant networks
  • StarTech.com SFP modules are covered by a lifetime warranty
  • Meets the requirements of the Multi-Source Agreement (MSA).

Key specifications

Transmission
Single Mode
Module type
QSFP+
Wavelength
1330 nm
Item number
16688410

General information

Manufacturer
StarTech
Category
Transceivers
Manufacturer no.
QSFP40LR4ST
Release date
22.9.2021

Colour

Colour
Silver
Exact colour description
Silver

Transceiver properties

Module type
QSFP+
Transmission
Duplex
Wavelength
1330 nm
Max. Transmission range
10000 m
Transmission
Single Mode
Interface
SFP+
Data throughput
40 Gbit/s

Voluntary climate contribution

CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
1 piece(s)

Product dimensions

Length
72 mm
Width
18.40 mm
Height
13 mm
Weight
40 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Transceivers» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • StarTech
    Not enough data
  • 1.Aruba
    0 %
  • 1.Cisco
    0 %
  • 3.BlueLAN
    0.2 %
  • 3.Digitus
    0.2 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • StarTech
    Not enough data
  • 1.CBO
    0 days
  • 1.TP-Link
    0 days
  • 1.Ubiquiti
    0 days
  • 1.Zyxel
    0 days

Return rate

How often is a product of this brand in the «Transceivers» category returned?

Source: Digitec Galaxus
  • StarTech
    Not enough data
  • 1.SwissGBIC
    1.2 %
  • 2.BlueLAN
    2.1 %
  • 3.BlueOptics
    2.4 %
  • 4.Cisco
    2.9 %
Source: Digitec Galaxus