Zyvpee 1606KL-04W-B40 40mm 10mm 12V ball bearing 2-pin case fan

40 mm ball-bearing case fan

The Zyvpee 1606KL-04W-B40 is a 40 mm square case fan with a 10 mm thickness. It runs on 12 V DC power and uses a two-pin connector for simple polarity connection. The black frame houses a ball-bearing motor rated for CPU cooling duties. This non-LED unit suits compact builds or replacement cooling in tight spaces.

Replaces noisy or failed 40 mm fans

Swap this in when an existing 4015-size fan becomes loud, vibrates or stops spinning. The ball bearing handles continuous operation better than sleeve alternatives in similar footprints. The jump is worth it if the current fan runs hot or the bearing whine is audible. It matches the standard 40 mm mounting pattern for direct substitution.

Two-pin plug fits most headers

Installation requires aligning the two-pin connector with a matching header on the board or controller. Polarity must be observed so the fan spins in the correct direction. The 10 mm depth fits most 40 mm mounts but verify clearance against nearby components. A common issue is reversed wires causing the fan to run backwards or not start.