AOC, DAC, ACC & AEC Cables

AOC, DAC, ACC and AEC Cable Selection for 100G-800G Links

PHILISUN AOC, DAC, ACC and AEC cables support high-speed switch, server, GPU, storage and AI cluster interconnects where link distance, airflow, power and platform compatibility must be decided together. Use this page as the main high-speed cable buying path: choose a DAC cable for the shortest low-power copper links, ACC when passive copper needs more signal margin, AEC for active electrical 400G/800G and breakout links, and an AOC cable for lighter optical rack-to-rack routes before choosing the exact form factor, speed and mapping.

Quick answer for DAC vs AOC and DAC cable vs AOC cable: DAC is usually the first choice for short same-rack links where cost and power matter most; AOC is usually better when the route is longer, cable weight and airflow matter, or an optical path is preferred. If you already know the cable family, go directly to DAC cables or AOC cables.

Cable family	Best fit	Typical planning notes	Start here
DAC	Shortest same-rack or adjacent-port copper links.	Lowest power and cost, but length and cable weight become limiting factors at higher speeds.	DAC Cables
ACC	Short copper routes that need active signal conditioning.	Useful when passive DAC reach or signal margin is not enough for the platform and speed.	ACC Series
AEC	High-speed electrical links and breakout assemblies.	Retiming and active electronics can help 400G/800G links that need stronger signal integrity.	AEC Series
AOC	Longer or cleaner rack-to-rack optical cable routes.	Lighter than copper bundles and often better for airflow, bend radius and row-level routing.	AOC Cables

When the route leaves the rack, crosses patch panels or needs a modular fiber plant, compare integrated high-speed cables with optical transceivers, MPO cable assemblies and fiber patching so the full channel is planned before purchasing.

How to choose a high-speed cable family

• Start with the port: confirm QSFP28, QSFP56, QSFP-DD, OSFP, SFP28, SFP56 or breakout requirements.
• Check route length: same-rack links often favor DAC or ACC, while longer or tighter routes may favor AOC.
• Plan for airflow and bend radius: copper bundles are heavier; AOC can simplify dense rack routing.
• Confirm platform compatibility: switch model, firmware, EEPROM coding and DOM/DDM requirements can affect recognition.
• Include application constraints: AI/HPC clusters may need predictable latency, FEC planning, clean labeling and repeatable rack routes.

Deployment question	Recommended next step	Related guide
Which cable type fits 100G-800G links?	Compare DAC, ACC, AEC and AOC by distance, power, cost and latency.	DAC vs ACC vs AEC vs AOC guide
How long can each cable type run?	Map the rack route first, then check the speed and form factor limit.	Cable length limits guide
How should AI/HPC links be planned?	Include switch hops, FEC, optics, cable route and topology in the latency budget.	Low-latency AI/HPC cabling
When do modular optics make more sense?	Use optical transceivers plus fiber cabling for longer, patched or structured links.	Optical Transceivers

Ordering checklist for AOC, DAC, ACC and AEC cables

For a faster recommendation, send PHILISUN the switch or NIC model, port form factor, speed, cable length, breakout mapping, rack route, quantity, coding requirements, label format and any packaging or test report requirements. For project-level cabling with patch panels, MPO trunks and optical modules, start from Fiber Optic Network & Cabling Solutions.

AOC/DAC Cable Selection FAQ

Is DAC better than AOC for short data center links?

DAC is often better for the shortest same-rack links when low power and cost are the priority. AOC becomes more attractive when the route is longer, the cable bundle is heavy, or airflow and bend radius are harder to manage.

When should I choose ACC instead of passive DAC?

Choose ACC when the link should stay copper-based but passive DAC does not provide enough reach or signal margin for the target speed, length and switch platform.

What is the role of AEC in 400G and 800G links?

AEC uses active electronics such as retiming or signal conditioning to support high-speed electrical links and breakout assemblies where signal integrity is more demanding.

Can PHILISUN customize cable length and coding?

Yes. Cable length, breakout mapping, EEPROM coding, label format, packaging and test documentation can be specified for the target switch, NIC or GPU platform.

What information is needed for a quote?

Send the port type, speed, length, host platform, breakout requirement, rack route and quantity. If the deployment is for AI or HPC, include topology and latency constraints as well.