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400GBASE-CU DAC Cable 30AWG, 0.5m(1.64ft) QSFP-DD to QSFP-DD Passive Direct Attach Cable Compatible for Cisco Switch, Router, Network Device
QSFPTEK

QSFPTEK 400GBASE-CU DAC Cable 30AWG

Bottom line: The QSFPTEK 400GBASE-CU DAC Cable 30AWG is a specs-and-price decision rather than a crowd-consensus one in the cables & connectors category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Data rate up to 425Gbps, 400G QSFP-DD to 400G QSFP-DD, low power consumption: ≤0.1W.
  • ✓ Backed by QSFPTEK's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored QSFPTEK 400GBASE-CU DAC Cable 30AWG using a rating × review-volume × price-fit model applied to published specs and reviews across the cables & connectors category. QSFPTEK's cables & connectors lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for cables & connectors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Data rate up to 425Gbps, 400G QSFP-DD to 400G QSFP-DD, low power consumption: ≤0.1W.
  • Media type is passive copper cable,minimum Bend Radius 33.5mm.
  • Compliant with hot pluggable QSFP-DD MSA, IEEE 802.3bj, IEEE 802.3cd standard.
  • PVC jacket, compliant with RoHS Environmental Standard (Lead-free).
  • 400G DAC cables are suitable for short-distance connections between different cabinets in data centers, such as within a cabinet or between racks.

Full Specifications

BrandQSFPTEK
ColorFor Cisco
ModelQT-QSFP-DD-DAC-P0.5M-CO
Weight400g
Frequency425 GHz
Cable TypeEthernet
Unit Count1 Count
Item Length0.5 meters
CompatibilitySwitch
Connector TypeQsfp-dd
Number of Pins72
Special FeatureHigh Speed
Connector GenderMale-to-Male
Specification MetRoHS
Compatible DevicesNetworking Devices with QSFP-DD Ports
Data Transfer Rate425 gigabits_per_second
Indoor Outdoor UsageIndoor
Recommended Uses For ProductData center connectivity, short-range 400G Ethernet applications
Other Special Features of the ProductHigh Speed
Full listing title400GBASE-CU DAC Cable 30AWG, 0.5m(1.64ft) QSFP-DD to QSFP-DD Passive Direct Attach Cable Compatible for Cisco Switch, Router, Network Device

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400GBASE-CU DAC Cable 30AWG, 0.5m(1.64ft) QSFP-DD to QSFP-DD Passive Direct Attach Cable Compatible for Cisco Switch, Router, Network Device is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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400GBASE-CU DAC Cable 30AWG, 0.5m(1.64ft) QSFP-DD to QSFP-DD Passive Direct Attach Cable Compatible for Cisco Switch, Router, Network Device
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