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Reliable DAC cable for short range 40G.
QSFP-40G-CU3M
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QSFP+,40G,High Speed Direct-attach Cables,3m,QSFP+38M,CC8P0....
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QSFP-40G-CU3M
- Description:
- QSFP+,40G,High Speed Direct-attach Cables,3m,QSFP+38M,CC8P0.32B(S),QSFP+38M,Used indoor
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Huawei
- GTIN:
- 886598026543
- Condition:
- Warranty:
- 3
- List Price:
$543.00
- Price:
$38.0093% off
Quantity:
1
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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
U
Umer Farooq
5
Consistent low latency performance.
K
Kevin Shaw
5
Easy plug and play.
A
Adeel Shah
5
Good build quality.
M
Mark Olsen
4
Works well in dense racks.
O
Oliver Finch
5
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.
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.