Quote in under 60 seconds
AI-verified compatibility
Live inventory across 200+ brands
FedRAMP · HIPAA · FERPA
AI-assembled cross-tower solutions
StarTech.com QSFP-4SFP10G-CU5M Compatible 5M Direct Attach Breakout Cable 40Gbps QSFP4SFP10C5
StarTech.com·MPN: QSFP4SFP10C5

StarTech.com QSFP-4SFP10G-CU5M Compatible 5M Direct Attach Breakout Cable 40Gbps QSFP4SFP10C5

The StarTech.com QSFP-4SFP10G-CU5M compatible direct attach breakout cable provides 5 meters of passive copper connectivity, converting a single 40Gbps QSFP+ port into four 10Gbps SFP+ connections for efficient network segmentation.

  • High-Speed Breakout: Delivers 40Gbps connectivity from one QSFP+ port to four 10Gbps SFP+ ports, optimizing rack space and reducing cabling complexity in high-density environments.
  • Cisco Compatibility: Engineered and tested for seamless operation with Cisco brand compatible servers and routers, ensuring reliable performance in existing infrastructure.
  • Passive Copper Design: Offers a cost-effective and low-latency alternative to fiber optics for short-distance interconnects, minimizing power consumption and heat generation.
  • Hot-Pluggable Operation: Enables frictionless upgrades and replacements without requiring network shutdowns, preserving uptime for critical business operations.
$63.33
Low StockSale
Secure Checkout
Fast Fulfillment
Manufacturer Warranty Included

Product Overview

The StarTech.com QSFP-4SFP10G-CU5M compatible cable is a 5-meter passive copper direct attach cable designed for high-speed network interconnects, converting a single QSFP+ port into four 10Gbps SFP+ connections. This enables efficient utilization of high-density switch ports and server network interfaces.

Engineered to comply with MSA industry standards and specifically tested for Cisco compatibility, this cable ensures reliable performance and frictionless integration into existing network infrastructures, supporting critical data transfer operations.

  • Core Functionality: Facilitates 40Gbps data transfer by breaking out one QSFP+ port into four 10Gbps SFP+ links, enabling flexible network architecture and optimized bandwidth distribution.
  • Cisco-Tested Reliability: Programmed and tested for compatibility with Cisco brand servers and routers, ensuring dependable performance and reducing integration challenges in enterprise environments.
  • 5-Meter Reach: Provides ample length for intra-rack or adjacent-rack connectivity, supporting flexible equipment placement within data centers or server rooms.
  • RoHS Compliance: Adheres to environmental standards, demonstrating a commitment to sustainable IT practices and reducing the impact of hazardous substances.
  • Operational Value: Backed by a lifetime warranty, this cable offers long-term reliability and reduces total cost of ownership by minimizing replacement needs and ensuring continuous network operation.

This direct attach breakout cable is an essential component for organizations seeking to optimize network performance and density with proven reliability.

Technical Specifications

1Performance & Business Impact
Data Transfer Rate40000 Mbit/s (40 Gbps)
Breakout Configuration1x QSFP+ to 4x SFP+
InfiniBand Protocol SupportYes
Hot-PluggableYes
2Connectivity & I/O
Connector 1QSFP+ Male
Connector 24x SFP+ Male
Cable Length5 m (16.4 ft)
3Physical & Environmental
Weight500 g (1.1 lbs)
Product ColorBlack
Jacket MaterialPolyvinyl chloride (PVC)
Operating Temperature (T-T)0 - 70 °C (32 - 158 °F)
4Lifecycle, Warranty & Compliance
WarrantyLifetime Warranty
In-Box Contents1 QSFP+ to 4x SFP+ Direct Attach Breakout Cable
Compliance CertificationsRoHS, CE, FCC, REACH
Harmonized System (HS) Code84733080

Full Specifications

Manufacturer Data
Features10
Cable length5 m
InfiniBand protocolYes
Connector 1QSFP+
Connector 24x SFP+
Connector 1 genderMale
Connector 2 genderMale
Product colourBlack
Data transfer rate40000 Mbit/s
Jacket materialPolyvinyl chloride (PVC)
Plug and PlayYes
Weight & dimensions1
Weight500 g
Certificates2
Compliance certificatesRoHS
CertificationCE, FCC, REACH
Packaging content1
Quantity per pack1 pc(s)
Operational conditions1
Operating temperature (T-T)0 - 70 °C
Packaging data1
Package width275 mm
Logistics data1
Master (outer) case width334 mm
Downloads1
Product Datasheet93 KB
Download

What This Solves

High-Density Rack Interconnects

In modern data centers, optimizing rack space and port utilization is crucial for operational efficiency. This cable enables a single 40Gbps QSFP+ port to connect to four 10Gbps SFP+ devices, consolidating links and simplifying cabling within server racks.

Data center operators, co-location facilities, enterprise infrastructure teams, large-scale virtualized environments

Server-to-Switch Connectivity

Connecting multiple 10GbE network interface cards (NICs) on a server to a high-speed 40GbE switch uplink can be complex and costly with individual transceivers. This direct attach cable provides a cost-effective and low-latency solution for linking servers to top-of-rack switches.

IT operations teams, network operations centers, infrastructure management, private cloud deployments

Network Aggregation & Breakout

Organizations often need to aggregate lower-speed links into a higher-speed backbone or break out a high-speed link to multiple lower-speed devices. This cable facilitates efficient 40Gbps to 4x 10Gbps breakout, supporting flexible network segmentation and bandwidth allocation.

Campus networks, remote office deployments, metro-area infrastructure, core network upgrades

Key Features

40Gbps QSFP+ to 4x 10Gbps SFP+ Breakout

Enables efficient utilization of high-density switch ports and server network interfaces, optimizing rack space and reducing cabling complexity.

5-Meter Passive Copper Cable

Provides a cost-effective, low-latency, and low-power alternative to fiber optics for short-distance interconnects within data centers or server rooms.

Cisco QSFP-4SFP10G-CU5M Compatibility

Ensures seamless integration and reliable performance within existing Cisco-centric network infrastructures, minimizing compatibility issues.

Hot-Pluggable Design

Allows for frictionless upgrades and replacements without requiring network shutdowns, preserving uptime for critical business operations.

MSA Industry Standards Compliance

Guarantees broad interoperability with various vendor equipment, providing flexibility and protecting infrastructure investments.

Compatible With

Network Switches

Cisco Nexus, Catalyst series, HPE FlexFabric, Dell PowerSwitch, Juniper QFX series

Servers & Storage

Rack servers, blade servers, network-attached storage (NAS), storage area networks (SAN)

Data Center Infrastructure

Top-of-rack (ToR) switches, end-of-row (EoR) switches, aggregation layers

High-Performance Computing

HPC clusters, virtualized environments, cloud infrastructure deployments

Frequently Asked Questions

What is the primary application of this breakout cable?

This cable is primarily used to connect a single 40Gbps QSFP+ port on a network switch or server to four separate 10Gbps SFP+ ports on other devices, facilitating high-density, short-reach interconnects within a data center rack.

Is this cable compatible with non-Cisco networking equipment?

While specifically tested for Cisco compatibility, this cable also complies with MSA (Multi-Source Agreement) industry standards, which generally ensures broad interoperability with other brands of networking equipment that adhere to these standards.

What are the advantages of using a passive direct attach copper (DAC) cable over active optical cables (AOCs)?

Passive DACs like this one are more cost-effective, consume less power, and have lower latency than AOCs for short distances (typically up to 7 meters), making them ideal for intra-rack connectivity.

Can this cable be used for distances longer than 5 meters?

This specific cable is 5 meters in length. While DAC technology can extend slightly further, passive copper cables are generally limited to short distances (up to 7 meters) for reliable 40Gbps performance. For longer distances, active optical cables or fiber optic transceivers are recommended.

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.

$63.33