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5m passive copper cable offers reliable 40G connectivity. Minimal signal loss over distance.
QSFP-H40G-CU5M
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40GBASE-CR4 Passive Copper Cable, 5m
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Name:
QSFP-H40G-CU5M
- Description:
- 40GBASE-CR4 Passive Copper Cable, 5m
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 819814015434
- Condition:
- Warranty:
- 3
- List Price:
$442.00
- Price:
$97.0078.1% off
Quantity:
1
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QSFP-H40G-CU5M Overview
QSFP-H40G-CU5M is a QSFP cable assembly designed for 40G data rate applications, providing a passive direct-attach copper (DAC) connection for short-range transmission in data centers and enterprise networks. It supports Ethernet protocols and offers a reliable, cost-effective alternative to optical modules for high-bandwidth interconnects.
QSFP-H40G-CU5M conforms to the QSFP form factor with dimensions specified in its datasheet, making it ideal for high-density port environments. Its integrated design and robust performance meet the demands of modern telecom and enterprise infrastructures while ensuring compatibility with industry-leading vendors.
QSFP-H40G-CU5M price is $97.00, a 78.1% saving from the Cisco list price of $442.00. QSFP-H40G-CU5M is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-H40G-CU5M for additional pricing. Browse the full 40G Base Modules series or explore all Cisco products.
QSFP-H40G-CU5M 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
- 5 meters
- Supported Protocols
- Ethernet
- Network Interface
- Ethernet
- Power Consumption
- N/A
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- QSFP-H40G-CU5M
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
QSFP-H40G-CU5M Use Case
High-Density Top-of-Rack 40GbE Switch Interconnect
In large-scale data centers, network architects deploy QSFP-H40G-CU5M-40GBASE-CR4 Passive Copper Cable, 5m to connect leaf and spine switches within server racks. This solution delivers cost-effective, low-power 40GbE links with minimal signal loss, streamlining cable management and boosting rack-level throughput by up to 40 Gbps per port.
High-Performance Computing Cluster Node Link
Research institutions leverage QSFP-H40G-CU5M-40GBASE-CR4 Passive Copper Cable, 5m for direct 40GbE connections between HPC compute nodes. The passive copper design ensures ultra-low latency and high reliability under heavy data loads, accelerating parallel workloads and enhancing cluster efficiency while reducing overall TCO.
Ultra-Low-Latency Financial Trading Network Upgrade
Financial firms upgrade their trading floors with QSFP-H40G-CU5M-40GBASE-CR4 Passive Copper Cable, 5m to link matching engines and market data feeds. The cable’s zero-polarity design and stable 40 Gbps channels minimize jitter and latency, ensuring compliant, real-time trade execution and improved market responsiveness.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QSFP-H40G-CU5M |  QSFP-H40G-AOC10M |  WSP-Q40GLR4L= |  QSFP-40G-SR4-S |  QSFP-4X10G-LR-S= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | |
| Connector Type | N/A | Integrated Active Optical Cable | LC | MPO-12 | LC |
| Data Rate | 40G | 40G | 40G | 40 Gbps | 10G |
| Depth | N/A | N/A | 0.30 inches | 72.4 mm | 0.85 inches |
| Fiber Type | N/A | N/A | Single-mode | Multi-Mode (MMF) | Single-mode |
| Form Factor | QSFP | QSFP+ | QSFP+ | QSFP+ | QSFP |
| Height | N/A | N/A | 0.75 inches | 13.5 mm | 0.27 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | |
| Max Distance | 5 meters | 10m | 10 km | 10 km | |
| Network Interface | Ethernet | Fiber | Fiber | Ethernet | |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | Commercial (0°C to 70°C) | 0 to 70°C |
| Power Consumption | N/A | N/A | 3.5W | 1.5 W | 3.5 W |
| Product Name | QSFP-H40G-CU5M | QSFP-H40G-AOC10M | WSP-Q40GLR4L= | QSFP-4X10G-LR-S= | |
| Product Type | Transceiver | Transceiver | Transceiver | Optical Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | |
| Supported Protocols | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet | |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Long-Range | |
| Wavelength | N/A | N/A | 1310 nm | 1310 nm | |
| Weight | N/A | N/A | 0.045 lbs | 0.1 kg | 0.10 lbs |
| Width | N/A | N/A | 0.60 inches | 18.4 mm | 0.66 inches |
Reviews & Ratings
M
Malcolm Rhodes
5
Easy to deploy, performs well under heavy traffic.
T
Talia Knight
4
Compact and durable. Supports high-density deployments seamlessly.
D
Dante Pierce
5
Reliable short-range solution for 40G network connections.
L
Lydia Vaughn
5
Stable and low-latency performance. Professional-grade quality.
Questions & Answers
What is the QSFP-H40G-CU5M cable?
The QSFP-H40G-CU5M is a 5 meter, 40GBASE-CR4 passive copper cable designed for short-reach 40 GbE interconnects between QSFP+ ports.
Which data rates does the QSFP-H40G-CU5M support?
It supports 40 Gb/s aggregated data rates over four parallel 10 Gb/s lanes, fully compliant with IEEE 802.3ba specifications.
Is the QSFP-H40G-CU5M compatible with my switch or router?
Yes, it is interoperable with QSFP+ copper ports from leading vendors including Cisco, Juniper, Arista, Mellanox and HP.
What are the benefits of using a passive copper cable?
Passive copper cables offer low latency, low power consumption, and a lower total cost of ownership compared to active optical modules for short-reach links.