StarTech.com QSFP40GLR4S

Cisco-compatible 40GBASE-LR4 QSFP+ transceiver

A Cisco QSFP-40G-LR4-S compatible QSFP+ fibre transceiver for 40 Gigabit Ethernet links over single-mode fibre.

40 GbpsSingle-mode fibreLC duplexUp to 10 km

StarTech QSFP40GLR4S Cisco-compatible 40GBASE-LR4 QSFP+ transceiver

Key capabilities

40 Gigabit Ethernet

Supports 40GBASE-LR4 networking at up to 40 Gbps.

Long-reach single-mode fibre

Designed for links up to 10 km (6.2 mi) over single-mode fibre.

Cisco compatibility

Programmed and tested for Cisco switches and routers that support the required QSFP+ interface.

Operational visibility

Supports Digital Diagnostics Monitoring (DDM) and hot-swappable installation.

What to know before buying

A Cisco QSFP-40G-LR4-S compatible QSFP+ fibre transceiver for 40 Gigabit Ethernet links over single-mode fibre.

Match the connector type, interface and host capability to your equipment before ordering. Performance and charging depend on the connected devices and their supported standards.

Australian version and StarTech.com warranty

This item is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com lifetime manufacturer warranty in Australia.

Please retain your DeviceDeal tax invoice as proof of purchase. Warranty coverage and claims remain subject to StarTech.com warranty terms, eligibility requirements and product assessment.

Frequently asked questions

What is the StarTech QSFP40GLR4S?

It is a Cisco QSFP-40G-LR4-S compatible QSFP+ transceiver for 40GBASE-LR4 single-mode fibre links.

What network speed does QSFP40GLR4S support?

It supports a maximum data transfer rate of 40 Gbps.

How far can this transceiver reach?

The verified maximum transfer distance is 10 km (6.2 mi) over single-mode fibre.

Which fibre connector does it use?

It provides an LC duplex female fibre connection.

Does QSFP40GLR4S support DDM?

Yes. Digital Diagnostics Monitoring (DDM) is supported.

Can the module be hot-swapped?

Yes. The QSFP+ module is hot-swappable, helping reduce disruption during replacement or upgrades.

What host interface is required?

Use it with an MSA-compliant or Cisco-compliant QSFP+ port that supports the required 40GBASE-LR4 connection.

What warranty applies in Australia?

The Australian version supplied by DeviceDeal is covered by the official StarTech.com lifetime manufacturer warranty in Australia, subject to StarTech.com warranty terms and product assessment.

(QSFP40GLR4S)

Features and highlights

40 Gigabit Ethernet

Supports 40GBASE-LR4 networking at up to 40 Gbps.

Long-reach single-mode fibre

Designed for links up to 10 km (6.2 mi) over single-mode fibre.

Cisco compatibility

Programmed and tested for Cisco switches and routers that support the required QSFP+ interface.

Operational visibility

Supports Digital Diagnostics Monitoring (DDM) and hot-swappable installation.

40 Gbps
Single-mode fibre
LC duplex
Up to 10 km

Warranty confidence: Official StarTech.com lifetime manufacturer warranty in Australia, subject to StarTech.com warranty terms and assessment.

Specifications

Verified specifications for StarTech QSFP40GLR4S.

Hardware

Compatible brand	Cisco
Industry standard	IEEE 802.3ba 40GBASE-LR4
Form factor	QSFP+

Performance

Compatible networks	40 Gbps
Maximum data transfer rate	40 Gbps
Fibre type	Single mode
Fibre operating mode	Full-duplex
Maximum transfer distance	10 km (6.2 mi)
Wavelength	1270 nm to 1330 nm
DDM	Yes
MTBF	1,489,426 hours

Connectors and requirements

Connector	1 × LC duplex female
System requirement	MSA or Cisco-compliant QSFP+ port
Intended use	40 Gigabit fibre networking equipment and media converters

Power and environment

Power consumption	Less than 2.5 W
Operating temperature	0°C to 70°C (32°F to 158°F)
Storage temperature	-40°C to 85°C (-40°F to 185°F)
Humidity	595% RH

Physical and package

Colour	Silver
Enclosure	Aluminium
Dimensions	72 × 18.4 × 13 mm
Product weight	44 g
Included	1 × QSFP+ transceiver

SKU	QSFP40GLR4S
Barcode #	65030872058
Brand	Startech
Shipping Weight	0.0700kg
Shipping Width	0.100m
Shipping Height	0.050m
Shipping Length	0.110m
Shipping Cubic	0.000550000m3

Lifetime official manufacturer warranty

StarTech.com warranty in Australia

This item is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com Lifetime manufacturer warranty in Australia.

Please retain your DeviceDeal tax invoice as proof of purchase.

Warranty coverage and claims are subject to StarTech.com warranty terms, eligibility requirements and product assessment. This wording does not promise automatic replacement or guaranteed claim approval.