Is the QSFP-40G-eSM4 compatible with SFP+ transceivers?

Yes. It aggregates four 10 Gbps lanes via an MPO breakout cable to connect seamlessly with four SFP+ transceivers.

What data rate does the QSFP-40G-eSM4 support?

The transceiver supports an aggregate data rate of 40 Gbps, comprising four independent 10 Gbps channels.

Which fiber type is required for the QSFP-40G-eSM4?

It requires single-mode fiber (SMF) optimized for 1310 nm wavelengths to achieve its specified reach.

What network protocols does the QSFP-40G-eSM4 support?

It is compliant with IEEE 802.3ba 40GBase-eSM4 and QSFP+ MSA specifications for form factor, electrical, and optical performance.

Does the QSFP-40G-eSM4 support digital diagnostics monitoring (DDM)?

Yes. It supports Digital Diagnostics Monitoring via a 2-wire serial interface for real-time monitoring of optical power, temperature, and supply voltage.

What is the operating temperature range of the QSFP-40G-eSM4?

The module operates reliably within a temperature range of 0 °C to 70 °C (commercial grade).

What is the power consumption of the QSFP-40G-eSM4?

Typical power consumption is ≤3.5 Watts per module, depending on link conditions and operating environment.

How do I install the QSFP-40G-eSM4 transceiver?

Insert the QSFP+ transceiver into a compatible QSFP port until it latches, connect the MPO cable, and verify link status via your network device.

Is the QSFP-40G-eSM4 RoHS compliant?

Yes. The QSFP-40G-eSM4 is RoHS 6-compliant, ensuring it is free of hazardous substances like lead, mercury, and cadmium.

Does the QSFP-40G-eSM4 comply with industry MSAs?

Yes. It adheres to the QSFP+ Multi-Source Agreement (MSA) for mechanical dimensions, electrical interfaces, and optical performance.

What are the typical applications for the QSFP-40G-eSM4?

It is ideal for data center spine-leaf architectures, high-performance computing clusters, and enterprise core or distribution networks requiring 40 GbE up to 10 km.

How can I troubleshoot connectivity issues with the QSFP-40G-eSM4?

Check fiber polarity and cleanliness, verify MPO breakout cable mapping, confirm SFP+ compatibility, and review DDM diagnostics for power and temperature anomalies.

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QSFP-40G-eSM4

Name: 40GBase-eSM4 Optical Transceiver,QSFP+,40G,Single-mode Module (1310nm,10km,MPO)(Connect to four SFP+ Optical Transceiver)
Brand: Huawei
SKU: QSFP-40G-eSM4
Price: 754.62 USD
Availability: InStock
Rating: 4.3 (6 reviews)

Description:: 40GBase-eSM4 Optical Transceiver,QSFP+,40G,Single-mode Module (1310nm,10km,MPO)(Connect to four SFP+ Optical Transceiver)
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QSFP-40G-eSM4 Overview

QSFP-40G-eSM4 is a QSFP transceiver module engineered to deliver a 40G data rate over short-range transmission using high-performance multimode fiber optics. Featuring an MPO connector and a wavelength typically centered around 850 nm, this module supports Ethernet protocols and is ideally suited for data center interconnects, enterprise networks, and telecom applications where efficient, high-speed data transmission is critical.

Designed with a compact form factor, the QSFP-40G-eSM4 fits seamlessly into high-density networking equipment while adhering to rigorous industry standards for performance and reliability. Its precise physical dimensions, power efficiency, and broad compatibility with leading vendors such as Cisco, Juniper, Huawei, and Arista further make it an excellent choice for modern network infrastructures.

QSFP-40G-eSM4 price is $754.62, a 87% saving from the Huawei list price of $5,804.84. QSFP-40G-eSM4 is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-eSM4 for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.

QSFP-40G-eSM4 Specifications

Product Type: Transceiver
Form Factor: QSFP
Data Rate: 40G
Connector Type: MPO
Wavelength: 850 nm
Transmission Distance: Short-Range
Fiber Type: Multi-mode
Max Distance: 100 meters
Supported Protocols: Ethernet
Network Interface: Fiber
Power Consumption: 4.0W
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-eSM4
Height: N/A
Width: N/A
Depth: N/A
Weight: N/A

Quality Certifications

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

Product Comparison Table

	QSFP-40G-eSM4	DWDM-SFPGE-1559-79	DWDM-SFPGE-1546-92	XFP-STM64-LH40-SM1550	Huawei eSFP-FE-LX-SM1310-BIDI
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco, Juniper, Huawei, Arista	Cisco, Juniper, Huawei, Arista	Huawei
Connector Type	MPO	LC	LC	LC	LC
Data Rate	40G	1G	1G	10G	1G
Depth	N/A	N/A	1.00 inches	2.00 inches	N/A
Fiber Type	Multi-mode	Single-mode	Single-mode	Single-mode	Single-mode
Form Factor	QSFP	SFP	SFP	XFP	SFP
Height	N/A	N/A	0.125 inches	0.65 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	100 meters	N/A	80 km	40 km	10 km
Network Interface	Fiber	Fiber	Fiber	Fiber	Fiber
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	4.0W	N/A	2.5W	N/A	N/A
Product Name	QSFP-40G-eSM4	DWDM-SFPGE-1559-79	DWDM-SFPGE-1546-92	XFP-STM64-LH40-SM1550	Huawei eSFP-FE-LX-SM1310-BIDI
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	Long-Range	Long-Range	Long-Range	Long-Range
Wavelength	850 nm	1559 nm	1546.92 nm	1550 nm	1310 nm
Weight	N/A	N/A	0.05 lbs	0.20 lbs	N/A
Width	N/A	N/A	0.55 inches	1.10 inches	N/A

Reviews & Ratings

Clinton Reeves

Stable 40G single mode optic with reliable 10km reach.

Ralph Thornton

Clean optical lanes with predictable output.

Melvin Grant

Seamless breakout to SFP+ modules.

Frederick Cole

Consistent performance in aggregation layer.

Vernon Hayes

Carrier grade reliability observed.

Douglas Patterson

Dependable 40G QSFP+ module.

Questions & Answers

What is the QSFP-40G-eSM4 40GBase-eSM4 Optical Transceiver module?

The QSFP-40G-eSM4 is a 40GBase-eSM4 QSFP+ single-mode optical transceiver operating at 1310 nm with an MPO interface, designed for 10 km links and connectivity to four SFP+ modules.

What transmission distance does the QSFP-40G-eSM4 support?

The QSFP-40G-eSM4 supports single-mode fiber transmission distances of up to 10 kilometers under standard operating conditions.

What wavelength does the QSFP-40G-eSM4 use?

It operates at a nominal wavelength of 1310 nm, optimized for 40GBase-eSM4 single-mode optical links.

What connector type does this QSFP+ module feature?

The module features an MPO (8-fiber) connector interface that provides four parallel transmit and receive lanes.

Related Searches Huawei Transceivers

QSFP-40G-iSM4 QSFP-40G-eSR4 QSFP-4SFP10-AOC10M Huawei QSFP-40G-LR4 QSFP-40G-ER4 SFP-10G-ER-1310 SFP-10G-iLR SFP-FC4G-LW

QSFP-40G-eSM4 Overview

QSFP-40G-eSM4 price is $754.62, a 87% saving from the Huawei list price of $5,804.84. QSFP-40G-eSM4 is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-eSM4 for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.

QSFP-40G-eSM4 Specifications

Product Type

Transceiver

Form Factor

QSFP

Data Rate

40G

Connector Type

MPO

Wavelength

850 nm

Transmission Distance

Short-Range

Fiber Type

Multi-mode

Max Distance

100 meters

Supported Protocols

Ethernet

Network Interface

Fiber

Power Consumption

4.0W

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-eSM4

Height

N/A

Width

N/A

Depth

N/A

Weight

N/A

Product Comparison Table

	QSFP-40G-eSM4	DWDM-SFPGE-1559-79	DWDM-SFPGE-1546-92	XFP-STM64-LH40-SM1550	Huawei eSFP-FE-LX-SM1310-BIDI
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista	Cisco, Juniper, Huawei, Arista	Cisco, Juniper, Huawei, Arista	Huawei
Connector Type	MPO	LC	LC	LC	LC
Data Rate	40G	1G	1G	10G	1G
Depth	N/A	N/A	1.00 inches	2.00 inches	N/A
Fiber Type	Multi-mode	Single-mode	Single-mode	Single-mode	Single-mode
Form Factor	QSFP	SFP	SFP	XFP	SFP
Height	N/A	N/A	0.125 inches	0.65 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	100 meters	N/A	80 km	40 km	10 km
Network Interface	Fiber	Fiber	Fiber	Fiber	Fiber
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	4.0W	N/A	2.5W	N/A	N/A
Product Name	QSFP-40G-eSM4	DWDM-SFPGE-1559-79	DWDM-SFPGE-1546-92	XFP-STM64-LH40-SM1550	Huawei eSFP-FE-LX-SM1310-BIDI
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	Long-Range	Long-Range	Long-Range	Long-Range
Wavelength	850 nm	1559 nm	1546.92 nm	1550 nm	1310 nm
Weight	N/A	N/A	0.05 lbs	0.20 lbs	N/A
Width	N/A	N/A	0.55 inches	1.10 inches	N/A

Questions & Answers

What is the QSFP-40G-eSM4 40GBase-eSM4 Optical Transceiver module?

The QSFP-40G-eSM4 is a 40GBase-eSM4 QSFP+ single-mode optical transceiver operating at 1310 nm with an MPO interface, designed for 10 km links and connectivity to four SFP+ modules.

What transmission distance does the QSFP-40G-eSM4 support?

The QSFP-40G-eSM4 supports single-mode fiber transmission distances of up to 10 kilometers under standard operating conditions.

What wavelength does the QSFP-40G-eSM4 use?

It operates at a nominal wavelength of 1310 nm, optimized for 40GBase-eSM4 single-mode optical links.

What connector type does this QSFP+ module feature?

The module features an MPO (8-fiber) connector interface that provides four parallel transmit and receive lanes.