• Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable SFPS
  • Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable SFPS
  • Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable SFPS
  • Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable SFPS
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Refurb Squared Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable

Refurb Squared Cisco QDD-400-CU1M Compatible 1m (3ft) 400G QSFP-DD Passive Direct Attach Copper Twinax Cable

Model

Product SKU

RS-QDD-400G-CU1-173478

Description

Refurb Squared delivers fully tested, OEM-compatible optical transceivers, DWDM/CWDM systems, media converters and DAC/AOC cables — coded for Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet platforms, with lifetime warranty and fast global delivery.

The Cisco QDD-400-CU1M compatible 1m DAC cable provides a high-performance 400G passive link for short-reach networking via QSFP-DD ports. Built with high-quality passive copper twinax, it ensures stable 400Gb/s signal integrity with ultra-low latency and zero power consumption at the cable level. This assembly is an ideal, cost-effective solution for intra-rack equipment patching and high-bandwidth switch-to-server connectivity in next-generation data center environments.

Refurb Squared is brand of OEM-compatible optical networking products, including SFP, SFP+, QSFP+, QSFP28 and QSFP-DD transceivers, DWDM/CWDM systems, media converters, and DAC/AOC cables. Every module is 100% pre-shipment tested and coded for seamless compatibility with major platforms such as Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet — backed by a lifetime warranty, fast global delivery, and dedicated technical support for data centers, telecom operators, enterprise networks and system integrators worldwide.

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AUTHENTICITY & TESTING

Professionally verified before dispatch.

Every product is prepared for business use with checks for quality, functionality, and physical condition. Refurb Squared focuses on reliable, compatible equipment for enterprise environments.

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Quality checked

Inspected for condition, function, and readiness before fulfilment.

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Business-grade

Selected for dependable use across servers, networks, storage, and IT infrastructure.

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Circular IT

Extends hardware lifecycle and supports more sustainable IT procurement.

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Trusted sourcing

Supplied through a professional refurbished equipment process.

COMPATIBILITY CONFIDENCE

Built to fit your infrastructure.

Not sure if this product is right for your environment? Send us your model, part number, or project requirement and we will help confirm compatibility before purchase.

  • 1Share your server, switch, router, storage, or system model.
  • 2Confirm the required speed, connector, form factor, or configuration.
  • 3Get guidance before placing an order or requesting a quote.
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Lifetime warranty options

Selected products are supported with lifetime warranty coverage for long-term peace of mind.

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Expert support

Our team can help with configuration, compatibility questions, and sourcing alternatives.

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Fast quote assistance

Need bulk quantity, special compatibility, or project pricing? Send your requirement on WhatsApp.

NEED CONFIRMATION?

Ask before you buy.

Send this product link with your requirement and our team will help confirm availability, compatibility, and options.

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