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Black 40mm square cooling fan with two wires

OEM Industries

OEM Industries AD0405HB-G70 40mm CPU cooler

SKU CH-4Z80-4HT11 MPN AD0405HB-G70

40 mm ball-bearing fan runs at 6000 RPM on 5 V DC for compact CPU cooling

  • Fan size40 mm
  • Bearing designBall
  • Power input connector2 Wires
  • Product colorBlack
  • Product typeFan only
  • Compact 40 mm frame fits tight builds
  • Ball bearing runs at 6000 RPM for strong airflow
  • Low 0.96 W draw keeps system power efficient
  • 5 V two-wire lead simplifies installation
  • 10 mm slim profile clears low-profile coolers

Compact 40 mm cooling fan

The OEM Industries AD0405HB-G70 is a 40 mm square fan designed for tight spaces such as small-form-factor PCs or embedded boards. It runs on 5 V DC and draws 0.19 A, making it suitable for low-power headers or external adapters. The two-wire lead keeps wiring simple for system integrators and hobbyists alike. Ball-bearing construction supports continuous operation in always-on devices.

Thermals noise and power draw

At 6000 RPM the fan moves air through a 10 mm thick frame while consuming only 0.96 W. Ball bearings keep acoustic output steady over time without the rattle that can develop in sleeve designs. The 5 V supply rail limits total system power impact even when multiple units are daisy-chained. No LED lighting means zero light bleed in dark chassis builds.

Upgrade path and fit

This unit replaces worn or noisy 4010 fans in industrial switches, router appliances and compact CPU coolers where a 40 mm footprint is fixed. The jump is worth it when the original fan has failed or when ball-bearing longevity is preferred over sleeve alternatives. Builders who need PWM speed control or a three-wire tachometer signal should look elsewhere as this model provides only two wires. Buyers who want larger airflow or quieter operation at lower RPM will need a bigger frame size.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $20.99
Pricier than about 55% of the 1,559 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameAD0405HB-G70
Product colorBlack
Product typeFan only
Power
Power input connector2 Wires
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

How is the AD0405HB-G70 mounted and what step is often missed?

The 40mm frame uses standard four-hole mounting; the step often missed is ensuring the two-wire lead reaches the 5V header without strain.

What maintenance will the ball-bearing fan need later?

Ball bearings are sealed; no lubrication is required, but dust should be blown off the blades periodically to keep airflow at 6000 RPM.

What limit appears first during sustained operation?

The 0.96W motor and 5V 0.19A supply set the thermal ceiling; if case airflow is restricted the fan cannot spin faster than 6000 RPM to compensate.

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