StarTech.com Cisco Compatible 3M 40G QSFP+ Direct Attach Cable QSFPH40GCU3M
The StarTech.com QSFPH40GCU3M is a 3-meter direct-attach copper QSFP+ cable engineered to provide reliable 40 Gigabit Ethernet connectivity for Cisco-compatible networking infrastructure, ensuring consistent high-speed data transfer.
- 40Gbps Data Transfer: Supports 40 Gigabit Ethernet, enabling rapid data exchange for bandwidth-intensive applications and reducing network bottlenecks.
- Cisco Compatibility: Designed, programmed, and tested to work seamlessly with Cisco brand compatible switches and routers, ensuring frictionless integration.
- 3-Meter Reach: Provides a practical connection length for linking adjacent racks, switches, or servers within a data center or server room.
- Hot-Swappable Design: Allows for upgrades and replacements without requiring network downtime, maintaining continuous operational availability.
Product Overview
Product Overview
The StarTech.com QSFPH40GCU3M is a passive Twinax copper QSFP+ cable, 3 meters in length, engineered for 40 Gigabit Ethernet applications. It features male QSFP+ connectors on both ends, providing a direct, high-speed link between compatible networking devices.
This cable is specifically designed to be 100% compatible with Cisco QSFP-H40G-CU3M, ensuring reliable performance within existing Cisco infrastructure. Its Plug and Play functionality and compliance with MSA industry standards simplify deployment and guarantee broad interoperability, protecting your hardware investments.
- High-Speed 40GbE: Delivers a 40000 Mbit/s data transfer rate, supporting critical business applications that require substantial bandwidth and minimizing data transfer delays.
- Cisco-Certified Compatibility: Programmed and tested for full compatibility with Cisco switches and routers, ensuring reliable performance and avoiding costly interoperability issues.
- Passive DAC Technology: Utilizes a passive Twinax copper design for low power consumption and reduced latency, contributing to lower operational costs and faster network response times.
- Core Functionality: Provides a robust and direct connection solution for short-range 40 Gigabit Ethernet links, optimizing data flow within server racks and network closets.
- Operational Value: Backed by a lifetime warranty and hot-swappable design, this cable offers long-term reliability and simplifies maintenance, extending the lifecycle of your network infrastructure.
This direct attach cable is an essential component for businesses requiring dependable, high-speed network interconnects with proven compatibility and long-term operational value.
Technical Specifications
1Performance & Business Impact
2Connectivity & I/O
3Physical & Environmental
4Lifecycle, Warranty & Compliance
Full Specifications
Features10
Weight & dimensions1
Certificates2
Packaging content1
Operational conditions1
Packaging data1
Logistics data1
Downloads1
What This Solves
High-Speed Switch Interconnects
Within data centers or server rooms, high-bandwidth switches require reliable, low-latency connections to handle aggregated traffic. This cable provides a direct 40 Gigabit Ethernet link between compatible switches, ensuring optimal data flow and preventing bottlenecks.
Data center operators, co-location facilities, enterprise infrastructure teams
Server-to-Switch Links
Connecting high-performance servers or storage arrays to network switches demands robust and fast cabling to support intensive data operations. The 3-meter QSFP+ DAC facilitates direct, efficient 40GbE connections, maximizing server throughput and application responsiveness.
Enterprise IT departments, virtualized environments, database administrators
Network Device Stacking
Many enterprise-grade switches support stacking for simplified management and increased port density, requiring dedicated high-speed links between units. This cable enables direct stacking of compatible network devices, creating a unified and resilient network fabric.
Campus networks, remote office deployments, metro-area infrastructure
Key Features
40 Gbps Data Transfer Rate
Enables rapid data exchange across your network, supporting bandwidth-intensive applications and reducing latency for critical business operations.
Cisco QSFP-H40G-CU3M Compatibility
Ensures frictionless integration and reliable performance within existing Cisco networking environments, minimizing deployment complexities and compatibility issues.
3-Meter Cable Length
Provides sufficient reach for connecting devices within the same rack or adjacent racks, optimizing physical network layouts and cable management.
Passive Twinax Copper Design
Offers a cost-effective and energy-efficient solution for short-distance high-speed links, reducing power consumption and operational expenses.
Hot-Swappable QSFP+ Connectors
Allows for quick installation, upgrades, or replacements without interrupting network services, maintaining continuous uptime for business-critical systems.
Compatible With
Networking Switches
Cisco Nexus, Catalyst, Meraki switches with QSFP+ ports
Network Routers
Cisco ASR, ISR series routers equipped with QSFP+ interfaces
Server Network Interface Cards
High-performance servers, storage arrays with 40GbE QSFP+ NICs
Data Center Infrastructure
Rack-to-rack interconnects, top-of-rack switches, core network devices
Frequently Asked Questions
What is a Direct Attach Cable (DAC) and how does it differ from optical transceivers?
A Direct Attach Cable (DAC) is a fixed-length copper cable with transceivers integrated into each end, offering a cost-effective solution for short-distance, high-speed connections up to 100 meters. Unlike optical transceivers, DACs use copper wiring, making them more economical and consuming less power for short-reach applications, ideal for within-rack or adjacent-rack connectivity.
Is this StarTech.com cable guaranteed to work with all Cisco QSFP+ equipment?
This StarTech.com QSFPH40GCU3M cable is specifically designed, programmed, and tested to be 100% compatible with Cisco QSFP-H40G-CU3M, ensuring reliable operation with Cisco brand compatible switches and routers that support this specific module. It also complies with MSA industry standards for broad interoperability.
What are the primary advantages of using a passive DAC for 40GbE connections?
Passive DACs like this 3-meter cable offer several advantages for 40GbE connections over short distances. They are more cost-effective than active optical cables, consume significantly less power, and introduce minimal latency, making them ideal for high-density data center environments where efficiency and performance are critical.
Can this cable be used for InfiniBand protocol applications?
Yes, the StarTech.com QSFPH40GCU3M cable supports the InfiniBand protocol. This capability makes it suitable for high-performance computing (HPC) environments and other specialized applications requiring extremely low-latency and high-bandwidth interconnects beyond standard Ethernet.
Warranty & Returns
Manufacturer Warranty
Lifetime
Warranty is provided directly by the manufacturer and covers defects in materials and workmanship under normal use.
Return Policy
Returns subject to manufacturer approval
Hardware returns are governed by the manufacturer's return policy. Some products are non-returnable or subject to restocking fees. Defective items are handled under the manufacturer warranty. Contact Zent Networks before initiating any return.