Fans
Fans DS04020B12H 12V 0.20A 40x40x20mm 3-wire case fan
A 12 V 40×40×20 mm case fan with a three-wire connection for speed monitoring
- 12 V 0.20 A draw keeps power use low
- 40 mm square frame fits tight 1U bays
- 20 mm thick profile slides into slim chassis
- 3-wire connector supports speed monitoring
40 mm 12 V case fan for tight server builds
This 40×40×20 mm fan runs on 12 V and draws 0.20 A through a three-wire connector. It fits 1U server chassis and network switches where space is at a premium. The compact frame targets system builders who need targeted airflow in dense enclosures.
Replaces worn original fans in 1U gear
Swap it in when an existing 40 mm unit becomes noisy or fails, restoring cooling without modifying the chassis. The jump is worth it if the current fan has degraded or if a two-wire replacement lacks speed monitoring. Builders needing larger frames or higher static pressure should look elsewhere.
Highlights
- 12 V 0.20 A draw keeps power use low
- 40 mm square frame fits tight 1U bays
- 20 mm thick profile slides into slim chassis
- 3-wire connector supports speed monitoring
Specifications
No published specifications for this item yet.
Questions about this item
Will the 40×40×20 mm frame fit my 1U server bracket?
The fan measures 40 mm square and 20 mm thick, matching the standard 1U form factor used in many server and switch chassis.
Which wire on the 3-wire connector carries the tachometer signal?
The third wire is typically yellow and provides the RPM feedback signal; connect it to the motherboard or controller header marked TACH or FAN_IN.
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