We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black 40mm square fan, 20mm thick, two-wire connector

OEM Industries

OEM Industries CHA4012EB-M 40x20mm 12V .24A 2-Wire CPU Cooler

SKU CH-QFZ9-MDNNT

A compact 40 x 20 mm square cooling fan with ball bearing, 12 V 0.24 A two-wire power

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Bearing TypeBall
  • LEDNo
  • Compact 40 mm square frame fits tight CPU spaces
  • 12 V 0.24 A draw keeps power use low
  • Ball bearing design extends operational lifespan
  • Two-wire connection simplifies motherboard hookup
  • 40 x 20 mm profile suits low-profile builds

40×20 mm ball-bearing fan

The OEM Industries CHA4012EB-M is a compact 40 mm square cooling fan designed for tight spaces inside a chassis. It runs on 12 V and draws 0.24 A through a simple two-wire connection. The ball bearing and black frame suit builders who need a small, reliable airflow device for targeted component cooling.

Continuous low-speed airflow

At its rated voltage the fan delivers steady airflow without the ramp-up spikes seen in larger PWM models. The two-wire design means speed stays constant, so acoustic output and cooling capacity remain predictable during extended sessions. This behaviour suits applications where a fixed thermal baseline matters more than dynamic control.

Ball bearing and two-wire simplicity

The ball bearing reduces friction wear compared with sleeve alternatives, supporting longer uninterrupted operation in confined layouts. A two-wire lead plugs directly into a 12 V header or adapter, avoiding extra cables in small-form-factor builds. The 40×20 mm footprint fits legacy brackets and custom mounts where larger fans cannot be accommodated.

Highlights

  • Compact 40 mm square frame fits tight CPU spaces
  • 12 V 0.24 A draw keeps power use low
  • Ball bearing design extends operational lifespan
  • Two-wire connection simplifies motherboard hookup
  • 40 x 20 mm profile suits low-profile builds

Specifications

ModelCHA4012EB-M
ColorBlack
TypeFan only
Fan Size40mm
Bearing TypeBall
LEDNo

Questions about this item

How much noise and heat does the 40×20 mm ball-bearing fan produce when running continuously?

The 40 mm fan uses a ball bearing and runs at 12 V, 0.24 A, so it spins steadily with moderate airflow and low acoustic output for a compact cooler.

What connector or header must my motherboard provide for the 2-wire 12 V fan?

A standard 2-pin 12 V fan header is required; the cooler has only two wires for power and ground with no PWM or speed-signal lead.

Will the 40 mm square frame fit alongside taller memory modules or larger heatsinks I already have?

The slim 20 mm thickness and 40 mm footprint leave ample clearance for most high-profile RAM and adjacent components.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.