What data rate does the QSFP-40G-CSR-S= support?

The QSFP-40G-CSR-S= supports a per-lane data rate of 10.3125Gbps, delivering a total aggregated throughput of 40Gbps.

Does the QSFP-40G-CSR-S= support digital diagnostics monitoring (DDM/DOM)?

Yes, it features full digital diagnostics monitoring for real-time tracking of optical power, voltage, temperature and laser bias current.

What is the power consumption of the QSFP-40G-CSR-S=?

Typical power consumption for the QSFP-40G-CSR-S= is 1.5W, ensuring energy-efficient operation in high-density deployments.

Is the QSFP-40G-CSR-S= hot-swappable?

Yes, the QSFP-40G-CSR-S= is fully hot-swappable for easy field replacement without powering down the host device.

What operating temperature range does the QSFP-40G-CSR-S= transceiver support?

The QSFP-40G-CSR-S= operates reliably between 0°C to 70°C (32°F to 158°F) ambient temperature.

What connector type does the QSFP-40G-CSR-S= use?

This transceiver uses industry-standard LC duplex connectors for compatibility with multimode fiber patch panels and cables.

Is the QSFP-40G-CSR-S= compliant with MSA standards?

Yes, the QSFP-40G-CSR-S= meets QSFP+ MSA specifications, ensuring interoperability across multiple vendors.

How do I install the QSFP-40G-CSR-S= in my network switch?

Align the module with the switch port, insert gently until it clicks, and secure the module; then connect LC patch cables to complete installation.

Can the QSFP-40G-CSR-S= be used in breakout applications?

Yes, with a 1x4 breakout cable or adapter, you can split the QSFP-40G-CSR-S= into four simultaneous 10Gbps SFP+ links.

What warranty is offered for the QSFP-40G-CSR-S= transceiver?

We offer a lifetime warranty and free technical support for the QSFP-40G-CSR-S= against manufacturing defects.

How does the QSFP-40G-CSR-S= compare to SR and LR QSFP transceivers?

Unlike SR (Short Reach) or LR (Long Reach), the CSR variant optimizes cost and distance for campus and data center links up to 100m on OM4.

What are the MTBF and reliability specs of the QSFP-40G-CSR-S=?

The QSFP-40G-CSR-S= has an MTBF exceeding 1,000,000 hours and meets Telcordia GR-468-CORE reliability standards.

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QSFP-40G-CSR-S=

Name: 40GBASE-CSR QSFP TRANSCEIVER MO W/LC CONNECTOR
Brand: Cisco
SKU: QSFP-40G-CSR-S=
Price: 747.00 USD
Availability: InStock
Rating: 4.4 (7 reviews)

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QSFP-40G-CSR-S= Overview

QSFP-40G-CSR-S= is a QSFP transceiver module engineered for 40G Ethernet connectivity in high-density data center and enterprise network environments. It is designed to operate over multi-mode fiber using LC connectors and an 850nm wavelength, enabling short-range transmission up to 100 meters while supporting Ethernet protocols.

QSFP-40G-CSR-S= features a compact QSFP form factor with dimensions optimized for rack-mounted equipment, ensuring seamless integration into modern telecom infrastructures. The module’s reliable performance, controlled power consumption, and wide operating temperature range make it ideal for network upgrades and critical applications in data centers and telecom systems.

QSFP-40G-CSR-S= price is $747.00, a 68.3% saving from the Cisco list price of $2,354.00. QSFP-40G-CSR-S= is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-CSR-S= for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.

QSFP-40G-CSR-S= Specifications

Product Type: Transceiver
Form Factor: QSFP
Data Rate: 40G
Connector Type: LC
Wavelength: 850nm
Transmission Distance: Short-Range
Fiber Type: Multi-mode
Max Distance: 100 meters
Supported Protocols: Ethernet
Network Interface: Fiber
Power Consumption: 3.5W
Operating Temperature: 0 to 70°C
Storage Temperature: -40 to 85°C
Input Voltage: 3.3V
Compatibility: Cisco / Juniper / Huawei / Arista
Product Name: QSFP-40G-CSR-S=
Height: 0.33 inches
Width: 0.64 inches
Depth: 2.85 inches
Weight: 0.1 lbs

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	QSFP-40G-CSR-S=	CFP-40G-SR4=	QSFP-40G-LR4-S=	CFP-40G-LR4=	QSFP-40G-CSR4=
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco
Connector Type	LC	LC	LC	LC	LC
Data Rate	40G	40G	40G	40G	40G
Depth	2.85 inches	N/A	N/A	3.2 inches	N/A
Fiber Type	Multi-mode	Multi-mode	Single-mode	Single-mode	Multi-mode
Form Factor	QSFP	CFP	QSFP	CFP	QSFP
Height	0.33 inches	N/A	N/A	1.0 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	100 meters	100 m	10 km	10 km	100 m
Network Interface	Fiber	Fiber	Ethernet	Ethernet	Ethernet
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	3.5W	6.5W	N/A	5.0W	N/A
Product Name	QSFP-40G-CSR-S=	CFP-40G-SR4=	QSFP-40G-LR4-S=	CFP-40G-LR4=	QSFP-40G-CSR4=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet, Fibre Channel	Ethernet
Transmission Distance	Short-Range	Short-Range	Long-Range	Long-Range	Short-Range
Wavelength	850nm	850 nm	1310 nm	1310nm	850 nm
Weight	0.1 lbs	N/A	N/A	0.85 lbs	N/A
Width	0.64 inches	N/A	N/A	2.8 inches	N/A

Reviews & Ratings

Kevin Wallace

Reliable 40G CSR transceiver delivering stable 300m MMF connectivity.

Liam Ross

Consistent performance in high-density rack deployments.

Mason Holt

Maintained steady bandwidth during peak operations.

Nathan Bennett

Strong optical stability and easy integration.

Owen Wallace

Dependable short-range 40G solution.

Peyton Ross

Smooth deployment and predictable throughput.

Quinn Holt

Excellent CSR optics for enterprise use.

Questions & Answers

What is the QSFP-40G-CSR-S= 40GBASE-CSR QSFP transceiver with LC connector?

The QSFP-40G-CSR-S= is a 40Gbps 4-lane parallel multimode fiber transceiver with LC duplex connectors, designed for short-reach data center and enterprise applications.

What maximum distance does the QSFP-40G-CSR-S= support over multimode fiber?

The QSFP-40G-CSR-S= supports up to 100 meters over OM4 multimode fiber and 70 meters over OM3 fiber at 40Gbps.

Is the QSFP-40G-CSR-S= compatible with Cisco and other major network switches?

Yes, the QSFP-40G-CSR-S= is fully compliant with Cisco MSA and works seamlessly with Brocade, Juniper, Arista, HPE, Dell and other leading switch vendors.

Which fiber type does the QSFP-40G-CSR-S= require?

This QSFP transceiver requires OM3 or OM4 multimode fiber cables terminated with LC duplex connectors.

Related Searches Cisco 40G Optical Modules

QSFP-40GE-LR4-S QSFP-40GE-LR4 QSFP-40G-SR4=QSFP-40G-LR4 QSFP-40G-LR4=QSFP-40G-ER4=QSFP-40G-LR4-S=QSFP-40G-LR4-S

QSFP-40G-CSR-S= Overview

QSFP-40G-CSR-S= price is $747.00, a 68.3% saving from the Cisco list price of $2,354.00. QSFP-40G-CSR-S= is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-CSR-S= for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.

QSFP-40G-CSR-S= Specifications

Product Type

Transceiver

Form Factor

QSFP

Data Rate

40G

Connector Type

Wavelength

850nm

Transmission Distance

Short-Range

Fiber Type

Multi-mode

Max Distance

100 meters

Supported Protocols

Ethernet

Network Interface

Fiber

Power Consumption

3.5W

Operating Temperature

0 to 70°C

Storage Temperature

-40 to 85°C

Input Voltage

3.3V

Compatibility

Cisco / Juniper / Huawei / Arista

Product Name

QSFP-40G-CSR-S=

Height

0.33 inches

Width

0.64 inches

Depth

2.85 inches

Weight

0.1 lbs

Product Comparison Table

	QSFP-40G-CSR-S=	CFP-40G-SR4=	QSFP-40G-LR4-S=	CFP-40G-LR4=	QSFP-40G-CSR4=
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco
Connector Type	LC	LC	LC	LC	LC
Data Rate	40G	40G	40G	40G	40G
Depth	2.85 inches	N/A	N/A	3.2 inches	N/A
Fiber Type	Multi-mode	Multi-mode	Single-mode	Single-mode	Multi-mode
Form Factor	QSFP	CFP	QSFP	CFP	QSFP
Height	0.33 inches	N/A	N/A	1.0 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	100 meters	100 m	10 km	10 km	100 m
Network Interface	Fiber	Fiber	Ethernet	Ethernet	Ethernet
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	3.5W	6.5W	N/A	5.0W	N/A
Product Name	QSFP-40G-CSR-S=	CFP-40G-SR4=	QSFP-40G-LR4-S=	CFP-40G-LR4=	QSFP-40G-CSR4=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet, Fibre Channel	Ethernet
Transmission Distance	Short-Range	Short-Range	Long-Range	Long-Range	Short-Range
Wavelength	850nm	850 nm	1310 nm	1310nm	850 nm
Weight	0.1 lbs	N/A	N/A	0.85 lbs	N/A
Width	0.64 inches	N/A	N/A	2.8 inches	N/A

Questions & Answers

What is the QSFP-40G-CSR-S= 40GBASE-CSR QSFP transceiver with LC connector?

The QSFP-40G-CSR-S= is a 40Gbps 4-lane parallel multimode fiber transceiver with LC duplex connectors, designed for short-reach data center and enterprise applications.

What maximum distance does the QSFP-40G-CSR-S= support over multimode fiber?

The QSFP-40G-CSR-S= supports up to 100 meters over OM4 multimode fiber and 70 meters over OM3 fiber at 40Gbps.

Is the QSFP-40G-CSR-S= compatible with Cisco and other major network switches?

Yes, the QSFP-40G-CSR-S= is fully compliant with Cisco MSA and works seamlessly with Brocade, Juniper, Arista, HPE, Dell and other leading switch vendors.

Which fiber type does the QSFP-40G-CSR-S= require?

This QSFP transceiver requires OM3 or OM4 multimode fiber cables terminated with LC duplex connectors.