StarTech.com Cisco QSFP-H40G-CU5M 5m 40GBase Direct Attach Cable Transceiver

Network congestion and downtime can cripple your data centre, especially when you need fast, reliable links between switches. The StarTech.com Cisco QSFP-H40G-CU5M 5m 40GBase Direct Attach Cable Transceiver is a passive twinax copper cable that connects QSFP+ ports for 40 Gbps Ethernet, giving you a simple, low-latency solution for short-run, high-speed connections.

Benefits of StarTech.com Direct Attach Cable

You enjoy instant plug-and-play installation, eliminating complex configuration steps. The low-power design reduces heat and energy costs, while the passive construction keeps expenses down compared with fibre. Hot-swappable connectors let you replace or upgrade without shutting down the network, giving you peace of mind during maintenance. A lifetime warranty and multilingual support mean you are covered for the long term.

Key Features of a 5m Direct Attach Cable

• Cable / Technology: Twinaxial. Provides a sturdy, high-frequency medium for 40 Gbps signals.
• Cable / Right Connector Type: QSFP+. Matches the standard port on Cisco-compatible devices.
• Cable / Left Connector Type: QSFP+. Ensures seamless connection at both ends.
• Cable / Network Cable Type: Direct attach cable. Offers a cost-effective alternative to fibre for short distances.
• Color Category: Black. Gives a professional, unobtrusive appearance in racks.
• Compliant Standards: FCC, RoHS, WEEE, RCM. Meets global safety and environmental regulations.
• AWG: 28. Thin conductors maintain flexibility while supporting high data rates.
• Jacket Material: PVC. Durable outer layer protects against wear and abrasion.
• Features: Passive cable, Hot-pluggable. Allows easy insertion and removal without power loss.
• Length: 5m. Ideal for in-rack or between-rack connections within the same cabinet.

Usages of a 5m Direct Attach Cable

Perfect for linking servers to top-of-rack switches in a dense data centre.

Ideal for connecting two adjacent switches for stackable high-speed uplinks.

Suitable for attaching storage arrays to network fabrics that require 40 Gbps links.

Works well for test labs where rapid re-configuration of network paths is needed.

Great for blade chassis interconnects where space is limited and low latency is critical.

StarTech.com Direct Attach Cable

Many buyers worry about compatibility and whether a passive copper cable can match the performance of fibre. They also fear that a short-run cable might not be reliable enough for mission-critical workloads. This product is programmed and tested to work with Cisco-compatible switches and routers, adhering to MSA standards, so you can trust its interoperability.

The 5 m length, QSFP+ connectors and passive twinax design give you a low-cost, low-latency link that delivers full 40 Gbps performance without the need for active electronics. Combined with a lifetime warranty and free multilingual support, you can install with confidence, knowing the cable will perform reliably for years.

Specifications