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IT Support & Hardware · Foundational

Modular Power Supply

A PSU with detachable cables so only the needed connectors are installed.

Definition

Fully modular PSUs have all cables detachable, semi-modular units have fixed main cables, and non-modular units have all cables permanently attached. Modular designs improve airflow and cable management. Modular cables are not standardized between brands and must not be mixed.

Example

Use only the 12V-2x6 cable supplied with the PSU for a modular GPU connection.

Exam tip

Mixing modular cables from different PSU brands can destroy components because pinouts differ.

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