Cisco QSFP-4SFP10G-CU5M Compatible 5m 40G QSFP+ to 4x SFP+ Direct Attach Breakout Cable Twinax - 40GbE QSFP+ Copper DAC - Low Power Passive Transceiver Module DAC - Cisco Firepower, C9300, C3850

Copper QSFP+ Cable | 40 Gbps | Passive Breakout DAC | Lifetime Warranty

Product ID: QSFP4SFP10C5

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  • 100% CISCO QSFP-4SFP10G-CU5M COMPATIBLE QSFP+ BREAKOUT DAC: Works with Cisco switches like Firepower, C9300, C3850, C9300, C9500 and others
  • TECHNICAL SPECS: 5m (16.4ft) | 40Gbps | Passive Twinax (Copper) | 2x QSFP+ Pluggable Connector | 100 Ohm Impedance | 30 AWG Wire Gauge | PVC Cable Jacket | Hot swappable | MSA Compliant
  • DESIGNED FOR SERVER ROOMS: This DAC is a cost-effective copper alternative to fiber cable inside & between racks; factory termination means high performance & reliability with less maintenance.
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£381.99 GBP excl. VAT
£458.39 GBP incl. VAT

In stock: 6

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The QSFP4SFP10C5 is a Cisco QSFP-4SFP10G-CU5M compatible QSFP+ direct-attach breakout cable. It is designed, programmed and tested to work with Cisco® brand compatible servers or routers and complies with MSA industry standards. Connecting a single QSFP+ port to four 10G SFP+ ports, this passive copper breakout cable is fully hot-pluggable which makes upgrades and replacements seamless by minimizing network disruptions. 

Designed for short-length and high-speed interconnects, this low-power, low-latency copper QSFP+ cable is also a cost-effective alternative to fiber-optic cable assemblies. It supports short-distance applications such as point-to-point in-rack and across-rack network switch or server connections, for up to four 10G SFP+ devices. SFP Cables

All QSFP & QSFP+ cables are backed by a lifetime warranty and free lifetime multilingual technical support. offers a wide variety of direct-attach SFP Cables and SFP modules, providing the convenience and reliability you need to ensure dependable network performance.


  • Use in 40Gb/10Gb mixed Ethernet network applications
  • Point-to-point in-rack and across-rack server or network switch connections, for up to four devices

Partner Numbers

  • Exertis 10186390
  • Ingram Micro UK V934276
  • CMS Distribution V211126
  • UPC 065030874984


Warranty Information Warranty Lifetime
Color Black
Wire Gauge 26 AWG (0.404 mm)
Material Steel
Cable Length 5 m [16.4 ft]
Connector(s) 1 - Connector A QSFP+
4 - Connector B SFP+
Environmental Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -40°C to 80°C (-40°F to 158°F)
Hardware Compatible Brand Cisco
Cable Jacket Material PVC - Polyvinyl Chloride
Cable Type Passive Copper Cable
Packaging Information Package Height 35.0 mm [1.4 in]
Package Length 32.5 cm [12.8 in]
Package Width 27.5 cm [10.8 in]
Shipping (Package) Weight 816.0 g [28.8 oz]
Performance Maximum Data Transfer Rate 40Gbps for QSFP+ / 10Gbps for SFP+
Impedance 100 Ohm
Compatible Networks 40 Gbps
Power Consumption (In Watts) < 0.1 W (per end)
Physical Characteristics Product Length 5.0 m [16.4 ft]
Product Width 14.0 mm [0.6 in]
Product Height 1.2 cm [0.5 in]
Weight of Product 500.0 g [17.6 oz]
What's in the Box 1 - Included in Package QSFP+ to 4x SFP+ cable


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Frequently Asked Questions


Ensure the Network Device is running a compatible Firmware Version on a compatible Operating System. Please consult the manufacturer of the Network Device for more information regarding the minimum required or recommended system software.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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