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
Small square black plastic 40 mm case fan with two wires

Fans

Fans 4020 40x40x20mm 24V 1.54W 2-Wire case fan

SKU CH-MB9K-RF71H

Compact 40×40×20 mm case fan running at 24 V with 1.54 W power draw and a simple 2-wire connection

  • Compact 40 × 40 × 20 mm fits tight spaces
  • 24 V operation suits industrial and server chassis
  • 54 W draw keeps power budgets low
  • Two-wire connection simplifies installation

Compact 24V 40mm case fan

The 4020 frame measures 40 by 40 by 20 millimetres and runs on a 24 volt supply. It draws 1.54 watts through a simple two-wire connection. The unit is supplied new and fits standard 40 millimetre mounting points.

For tight chassis and 24V systems

Builders working with small-form-factor cases or 24 volt power rails can use this fan directly. Buyers who need PWM speed control, a three or four wire header, or higher airflow for larger enclosures should look at other models.

How it compares

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

Price $27.99
Pricier than about 70% of the 8,339 comparable items (median $19.99).

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

Specifications

No published specifications for this item yet.

Questions about this item

What does the 1.54W power rating mean for cooling performance in a live system?

At 1.54W the fan moves a modest volume of air, suited to spot-cooling a hotspot or exhausting a small chassis rather than serving as primary case airflow.

How does the 2-wire 24V interface affect speed control options?

The two-wire 24V connection provides power only, so speed is fixed unless an external voltage regulator or PWM controller is added between the supply and the fan.

More in PC Cooling Fans

Similar items