Is the QSFP-40G-CU3M hot-pluggable?

Yes. The QSFP+ form factor is hot-swappable, allowing live insertion and removal without shutting down the system.

How do I install the QSFP-40G-CU3M cable?

Align the latch on the QSFP+ connector with the port, insert until it clicks, and secure the cable. No tools are required.

What is the cable length of QSFP-40G-CU3M?

The QSFP-40G-CU3M measures exactly 3 meters, optimized for short-range indoor interconnects.

Can the QSFP-40G-CU3M operate in a standard data center environment?

Yes. It supports an operating temperature of 0 °C to 70 °C and meets standard indoor data center requirements.

How does the QSFP-40G-CU3M differ from optical modules?

It uses passive copper for low latency, zero cable power, and lower cost over short distances compared to active optical modules.

Is the QSFP-40G-CU3M RoHS compliant?

Yes. It meets RoHS 6/6 directives for lead-free and hazardous substance compliance.

What is the power consumption of QSFP-40G-CU3M?

As a passive direct-attach cable, it draws less than 0.1 W per end, minimizing port power usage.

Does QSFP-40G-CU3M support backward compatibility to lower speeds?

No. It is designed exclusively for 40 Gbps operation and does not support 10 Gbps or 25 Gbps modes.

How do I troubleshoot connectivity issues with QSFP-40G-CU3M?

Verify port settings, ensure proper seating, test continuity with a certified cable tester, and check for port error logs.

What warranty covers the QSFP-40G-CU3M cable?

It includes a lifetime limited warranty against manufacturing defects, subject to the manufacturer’s terms.

Can the QSFP-40G-CU3M be used in a PoE environment?

No. It carries data only and does not support Power over Ethernet (PoE).

Does the QSFP-40G-CU3M support multi-vendor interoperability?

Yes. It is fully compatible with transceiver ports from leading vendors supporting IEEE 802.3ba standards.

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QSFP-40G-CU3M

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Brand: Huawei
SKU: QSFP-40G-CU3M
Price: 38.00 USD
Availability: InStock
Rating: 4.3 (6 reviews)

Description:: QSFP+,40G,High Speed Direct-attach Cables,3m,QSFP+38M,CC8P0.32B(S),QSFP+38M,Used indoor
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QSFP-40G-CU3M Overview

QSFP-40G-CU3M is a QSFP transceiver engineered to deliver a 40G data rate over a short-range active copper cable solution designed for high-performance data centers and enterprise networks. It is optimized for Ethernet applications, ensuring reliable, low-latency connectivity between switches and routers in densely packed environments.

QSFP-40G-CU3M features the standard QSFP form factor with precise physical dimensions tailored for rack-mounted telecommunications equipment. The product is ideal for applications that demand a compact, energy-efficient solution, reliably transmitting 40G signals over a maximum distance of 3 meters while supporting protocols essential for modern network infrastructures.

QSFP-40G-CU3M price is $38.00, a 93% saving from the Huawei list price of $543.00. QSFP-40G-CU3M is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-CU3M for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.

QSFP-40G-CU3M Specifications

Product Type: Transceiver
Form Factor: QSFP
Data Rate: 40G
Connector Type: N/A
Wavelength: N/A
Transmission Distance: Short-Range
Fiber Type: N/A
Max Distance: 3m
Supported Protocols: Ethernet
Network Interface: Ethernet
Power Consumption: N/A
Operating Temperature: 0 to 70°C
Storage Temperature: -40 to 85°C
Input Voltage: N/A
Compatibility: Cisco / Juniper / Huawei / Arista
Product Name: QSFP-40G-CU3M
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-CU3M	QSFP-4SFP10-AOC10M	SFP-10G-AOC20M	OMXD30011	OGSM01880
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Form Factor	QSFP	QSFP to 4xSFP10 converter cable	SFP	SFP+	SFP+
Data Rate	40G	10G per channel (40G aggregate)	10G	10G	10G
Connector Type	N/A	Integrated AOC	LC	LC	LC
Wavelength	N/A	N/A	850nm	850nm	850 nm
Transmission Distance	Short-Range	Short-Range	Short-Range	Short-Range	Short-Range
Fiber Type	N/A	Multi-mode	Multi-mode	Multi-mode	Multi-mode
Max Distance	3m	10m	20 meters	300 meters	300 meters
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet	Ethernet
Network Interface	Ethernet	Optical	Ethernet	Fiber	Fiber
Power Consumption	N/A	N/A	N/A	2.5W	3.5 W
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Input Voltage	N/A	N/A	3.3V	3.3V	3.3V
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista
Product Name	QSFP-40G-CU3M	QSFP-4SFP10-AOC10M	SFP-10G-AOC20M	OMXD30011 10G SFP+ Transceiver Module	OGSM01880 10G SFP+ Transceiver Module
Height	N/A	N/A	N/A	0.53 inches	0.27 inches
Width	N/A	N/A	N/A	2.46 inches	0.25 inches
Depth	N/A	N/A	N/A	0.33 inches	3.5 inches
Weight	N/A	N/A	N/A	0.07 lbs	0.2 lbs

Reviews & Ratings

Simon Wright

Reliable DAC cable for short range 40G.

Umer Farooq

Consistent low latency performance.

Kevin Shaw

Easy plug and play.

Adeel Shah

Good build quality.

Mark Olsen

Works well in dense racks.

Oliver Finch

Dependable copper QSFP.

Questions & Answers

What is the QSFP-40G-CU3M copper cable?

The QSFP-40G-CU3M is a 3-meter passive QSFP+ direct-attach copper cable that supports 40 Gbps data transmission for short-range connectivity.

Which applications are ideal for the QSFP-40G-CU3M?

It’s ideal for high-speed data center switching, server uplinks, and storage networks requiring 40 Gbps bandwidth over 3 m links.

What devices are compatible with QSFP-40G-CU3M?

The cable is compatible with all QSFP+ ports on major switches, routers, network interface cards (NICs), and servers supporting 40 GbE.

Does the QSFP-40G-CU3M support 40 GbE Ethernet and InfiniBand?

Yes. It fully supports 40 Gigabit Ethernet (40 GbE) and QDR/DDR InfiniBand protocols.

Related Searches Huawei Transceivers

QSFP-40G-CU5M QSFP-40G-CU1M Huawei QSFP-4SFP10G-CU3M Huawei QSFP-4SFP10G-CU1M Huawei QSFP-4SFP10G-CU5M CXP-100G-CU3M CXP-100G-CU1M5 SFP-10G-AC10M

QSFP-40G-CU3M Overview

QSFP-40G-CU3M price is $38.00, a 93% saving from the Huawei list price of $543.00. QSFP-40G-CU3M is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for QSFP-40G-CU3M for additional pricing. Browse the full Huawei Transceivers series or explore all Huawei products.

QSFP-40G-CU3M Specifications

Product Type

Transceiver

Form Factor

QSFP

Data Rate

40G

Connector Type

N/A

Wavelength

N/A

Transmission Distance

Short-Range

Fiber Type

N/A

Max Distance

Supported Protocols

Ethernet

Network Interface

Ethernet

Power Consumption

N/A

Operating Temperature

0 to 70°C

Storage Temperature

-40 to 85°C

Input Voltage

N/A

Compatibility

Cisco / Juniper / Huawei / Arista

Product Name

QSFP-40G-CU3M

Height

N/A

Width

N/A

Depth

N/A

Weight

N/A

Product Comparison Table

	QSFP-40G-CU3M	QSFP-4SFP10-AOC10M	SFP-10G-AOC20M	OMXD30011	OGSM01880
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Form Factor	QSFP	QSFP to 4xSFP10 converter cable	SFP	SFP+	SFP+
Data Rate	40G	10G per channel (40G aggregate)	10G	10G	10G
Connector Type	N/A	Integrated AOC	LC	LC	LC
Wavelength	N/A	N/A	850nm	850nm	850 nm
Transmission Distance	Short-Range	Short-Range	Short-Range	Short-Range	Short-Range
Fiber Type	N/A	Multi-mode	Multi-mode	Multi-mode	Multi-mode
Max Distance	3m	10m	20 meters	300 meters	300 meters
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet	Ethernet
Network Interface	Ethernet	Optical	Ethernet	Fiber	Fiber
Power Consumption	N/A	N/A	N/A	2.5W	3.5 W
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Input Voltage	N/A	N/A	3.3V	3.3V	3.3V
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco, Juniper, Huawei, Arista
Product Name	QSFP-40G-CU3M	QSFP-4SFP10-AOC10M	SFP-10G-AOC20M	OMXD30011 10G SFP+ Transceiver Module	OGSM01880 10G SFP+ Transceiver Module
Height	N/A	N/A	N/A	0.53 inches	0.27 inches
Width	N/A	N/A	N/A	2.46 inches	0.25 inches
Depth	N/A	N/A	N/A	0.33 inches	3.5 inches
Weight	N/A	N/A	N/A	0.07 lbs	0.2 lbs

Questions & Answers

What is the QSFP-40G-CU3M copper cable?

The QSFP-40G-CU3M is a 3-meter passive QSFP+ direct-attach copper cable that supports 40 Gbps data transmission for short-range connectivity.

Which applications are ideal for the QSFP-40G-CU3M?

It’s ideal for high-speed data center switching, server uplinks, and storage networks requiring 40 Gbps bandwidth over 3 m links.

What devices are compatible with QSFP-40G-CU3M?

The cable is compatible with all QSFP+ ports on major switches, routers, network interface cards (NICs), and servers supporting 40 GbE.

Does the QSFP-40G-CU3M support 40 GbE Ethernet and InfiniBand?

Yes. It fully supports 40 Gigabit Ethernet (40 GbE) and QDR/DDR InfiniBand protocols.