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Small black square case fan 40 by 40 by 20 mm with dual ball bearing

Fans

Fans MGT4012XB-R20 4020 12V 0.15A 40x40x20mm case fan

SKU CH-RMR4-ZNGQV

A 40 mm dual-ball-bearing case fan running at 12 V and 0.15 A for compact cooling

  • Dual ball bearing design extends service life
  • 12 V operation fits standard PC headers
  • 40 × 40 × 20 mm size suits tight chassis spaces
  • Low 0.15 A draw keeps power use minimal

Compact 40 mm dual-ball case fan

This 40 x 40 x 20 mm case fan runs on 12 V and draws 0.15 A. The dual-ball bearing design targets builders who need reliable airflow in tight chassis spaces or on small-form-factor boards. It suits systems where a low-profile cooler is the only option.

Limited by 40 mm frame and fixed voltage

The 40 mm square frame restricts total air volume compared with larger fans. Operation is fixed at 12 V with no PWM or speed-control header mentioned, so airflow cannot be adjusted by the motherboard. Buyers who need variable speed or higher static pressure should look elsewhere.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 85% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I pick between the 4012 and 4020 model numbers shown for this fan?

The 4012 code is the series identifier and 4020 shows the 40 mm by 20 mm frame size, so both refer to the same 40x40x20 mm unit.

What does the 0.15 A current draw mean when the fan is running in my system?

At 12 V the fan pulls 0.15 A, giving a low power load that fits standard motherboard headers and small-case builds.

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