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Small black rectangular box with 3 and 4 pin fan connectors and cables attached

TOPOWER

TOPOWER ECASO Fan Control Box 3/4 Pin

SKU CH-1KQ8-NH9RS

Keeps case, GPU and CPU fans running for up to three minutes after shutdown to remove residual heat and reduce noise

  • TypeCase Fan Accessory
  • CompatibilityCase
  • Power Connector3 / 4 Pin
  • Reduces case, VGA and CPU fan noise for quieter operation
  • Runs fans for up to 3 minutes after shutdown to clear residual heat
  • Continued airflow after power-off helps extend component lifespan
  • Supports 3-pin and 4-pin fans across case, GPU and CPU headers
  • Includes ECASO box, fan cables for case, VGA, CPU and motherboard power adapter

What it is and who it is for

The TOPOWER ECASO is a fan control box that keeps case, VGA and CPU fans running for a short period after the computer powers down. It is built for builders who want residual heat removed without leaving the system fully on. It connects through standard three-pin and four-pin headers and includes cables for each supported fan type.

What to check before ordering

Verify that your motherboard and graphics card expose three-pin or four-pin fan headers for the units you wish to control. Ensure the included motherboard power adapter can reach your PSU connector and that your chassis has space for the control box itself. The package supplies dedicated cables for case fans, a VGA fan and a CPU fan.

Behaviour under sustained load

After shutdown the box continues to drive connected fans for up to three minutes, with the exact duration varying by power supply wattage. This extended airflow helps expel leftover heat from components, reducing thermal stress and fan wear during repeated power cycles. Noise levels drop once the timed cooling phase ends and the fans stop completely.

Highlights

  • Reduces case, VGA and CPU fan noise for quieter operation
  • Runs fans for up to 3 minutes after shutdown to clear residual heat
  • Continued airflow after power-off helps extend component lifespan
  • Supports 3-pin and 4-pin fans across case, GPU and CPU headers
  • Includes ECASO box, fan cables for case, VGA, CPU and motherboard power adapter

Specifications

BrandTOPOWER
ModelTOP-ECASO
TypeCase Fan Accessory
CompatibilityCase
Power Connector3 / 4 Pin

Questions about this item

What cables and adapters come with the ECASO box, and do I need to buy anything extra to connect case, VGA and CPU fans?

The package includes the ECASO box, case fan cables, a VGA fan cable, a CPU fan cable and a motherboard power adapter, so all supported fan types can be connected without extra purchases.

The product supports 3-pin and 4-pin fans — which version should I choose for my build?

The single unit handles both 3-pin and 4-pin connectors, so you do not need to pick a version; it works with either fan type.

The box claims three minutes of extra cooling after shutdown — what does that actually do inside a running PC?

After power-off the controller keeps case, VGA and CPU fans spinning for up to three minutes to remove residual heat, with the exact duration varying by power supply wattage.

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