Name: QSFP-H40G-CU5M Cisco 5M 40Gbps QSFP Twinaxial Direct-Attach Cable
Brand: Cisco
SKU: QSFP-H40G-CU5M
Price: 99.00 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The QSFP-H40G-CU5M is a 5-meter twinaxial direct-attach cable designed to interconnect Cisco QSFP ports at 40 Gbps speeds. It fits well in short-distance connections typically found inside racks or between adjacent equipment, offering a reliable and cost-effective alternative to optical cabling without compromising performance.

General Information
Brand	Cisco
Part Number	QSFP-H40G-CU5M

Technical Information
Data Rate	40 Gbps (4x10 Gbps)
Cable Length	5 m
Compatibility	Cisco QSFP+ ports, Cisco Nexus, Cisco Catalyst, Cisco UCS
Stacking Bandwidth	40 Gbps

Physical Characteristics
Form Factor	QSFP+ (Quad Small Form-Factor Pluggable Plus) Direct Attach
Weight	5.00
Condition	Refurbished

Product Description
The QSFP-H40G-CU5M cable is built for high-speed data connections between QSFP ports over a short distance. It’s often found in data centers and network racks where reliable 40 Gigabit Ethernet links are essential. Designed for Cisco equipment, this direct-attach cable provides a straightforward, cost-effective way to connect switches, servers, or storage devices without the need for additional transceivers. Key Features Delivers 40 Gbps throughput using QSFP connectors 5-meter length ideal for adjacent rack or shelf connections Maintains low power consumption compared to optical alternatives Passive cable ensures minimal signal loss for short runs Compatible with a broad range of Cisco networking products This cable is commonly deployed within enterprise and service provider environments where dense, high-bandwidth links are required in close physical proximity. It helps maintain clean and efficient network setups without the complexity of fiber optics. By using this cable, network admins benefit from simple plug-and-play installation and stable performance in demanding data center applications.

Use Cases
The QSFP-H40G-CU5M cable is commonly deployed in high-density data center environments where short-range, high-speed connections between networking devices are essential. It is particularly suited for IT professionals managing rack-level interconnects within enterprise or service provider infrastructures requiring reliable 40 Gbps links without the complexity of optical transceivers. How It's Used: Connecting top-of-rack switches to adjacent aggregation switches in data centers for low-latency traffic flow. Linking high-performance computing clusters where consistent 40 Gbps bandwidth supports intensive virtualization workloads. Interfacing storage arrays with servers in enterprise environments to reduce bottlenecks in SAN configurations. Facilitating rapid data transfer between edge computing devices within constrained rack spaces. Establishing reliable connections in campus networks where short-distance, high-throughput links are required. This direct-attach cable solution enables streamlined infrastructure deployment by minimizing complexity and power consumption while maintaining scalable network performance. It supports efficient utilization of rack space and reduces operational overhead in environments demanding consistent, high-speed interconnectivity.

QSFP-H40G-CU5M Cisco 5M 40Gbps QSFP Twinaxial Direct-Attach Cable

Product Overview

General Information

Technical Information

Physical Characteristics

Product Description

Use Cases