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12 cm black plastic case fan with four mounting holes

Fans

Fans 4715KL-04W-B56 1238 12CM Dell 390 case fan

SKU CH-2ENX-W89R3

12 cm case fan built for Dell 390 workstations using Minebea NMB 4715KL-04W-B56

  • Designed for Dell 390 workstations
  • Minebea NMB 1238 12CM build quality
  • 4715KL-04W-B56 exact replacement part
  • Ready to install in compatible systems

Dell 390 workstation fan

The 1238 12CM fan carries part number 4715KL-04W-B56 and is built for the Dell 390 workstation chassis. It fits the original mounting points without modification.

Minebea NMB 1238 replacement

The Minebea NMB unit restores factory airflow and acoustic profile when the original cooler wears out. Buyers needing a different connector, voltage or frame size cannot use this part.

Highlights

  • Designed for Dell 390 workstations
  • Minebea NMB 1238 12CM build quality
  • 4715KL-04W-B56 exact replacement part
  • Ready to install in compatible systems

Specifications

No published specifications for this item yet.

Questions about this item

Will the Minebea NMB 1238 12CM fan need bearing lubrication or full replacement as it ages in a Dell 390 workstation?

The Minebea NMB 1238 12CM fan uses sealed bearings that cannot be lubricated; when noise or vibration increases it must be replaced as a complete unit.

What thermal limit appears first when the 4715KL-04W-B56 fan runs continuously inside a Dell 390 chassis?

Under sustained load the motor reaches its rated temperature ceiling before airflow drops, triggering the built-in thermal protection to reduce speed.

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