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Square black plastic fan with metal bracket, four-pin connector visible, compact desktop cooling unit

DELL

DELL Alienware Aurora Top Case Fan Assembly 78JPW

SKU CH-9WHH-NYJWC MPN 78JPW

Genuine Dell top case cooling fan with mounting bracket for Alienware Aurora R5 through R12 desktops

  • Compatible brandsFor Dell
  • Supported modelsFor Dell Alienware Aurora R5 R6 R7 R8 R9 R10 R11 R12
  • Product dimensions5.7 in × 5.7 in × 1.2 in
  • Product weight0.4 lb (0.18 kg)
  • Genuine Dell part ensures exact fit for Alienware Aurora R5 through R12
  • 4-pin PWM connector enables automatic motherboard speed control
  • 65 CFM airflow capacity keeps critical components cool under load
  • Rifle-bearing design runs at 28 dBA for quiet operation
  • Included mounting bracket simplifies installation in the top case

Genuine Dell Aurora Top Case Fan Assembly

This genuine Dell 78JPW fan and bracket kit is built for Alienware Aurora R5 through R12 desktops. It replaces the factory top case cooling unit with an OEM exact match. The 4-pin PWM connector plugs directly into the motherboard for automatic speed control. Owners of these Aurora models can restore original thermal performance.

Practical limits of the 4-pin PWM interface

The 4-pin PWM connector allows the motherboard to regulate fan speed based on temperature sensors. Maximum airflow reaches 65 CFM at full duty cycle. Acoustic output is rated at 28 dBA under typical load. The interface does not support voltage-only control or three-pin headers without an adapter.

Check your existing setup before ordering

Verify that your chassis is an Alienware Aurora R5, R6, R7, R8, R9, R10, R11 or R12 before purchase. Confirm the top mounting points measure 5.7 by 5.7 inches with 1.2 inch clearance. Ensure the motherboard provides a standard 4-pin PWM header at the top rear position. This kit does not fit laptops or non-Aurora desktops.

How it compares

Measured against everything we stock in Laptop Repair Parts, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 88% of the 1,151 comparable items (median $33.99).

Specifications

Product
Brand nameDell
Part number78JPW
Size & build
Product dimensions5.7 in × 5.7 in × 1.2 in
Product weight0.4 lb (0.18 kg)
Compatibility
Compatible brandsFor Dell
Supported modelsFor Dell Alienware Aurora R5 R6 R7 R8 R9 R10 R11 R12

Questions about this item

Which Alienware Aurora models does the 78JPW top case fan assembly fit?

The 78JPW assembly is engineered exclusively for Alienware Aurora R5, R6, R7, R8, R9, R10, R11 and R12 desktops.

What airflow and noise level does the 65 CFM rifle-bearing fan deliver inside an Aurora chassis?

The fan moves 65 CFM of air while operating at 28 dBA, providing strong cooling with quiet operation during gaming or heavy workloads.

How does the 4-pin PWM connector control fan speed on the Aurora motherboard?

The 4-pin PWM connector allows the motherboard to automatically adjust fan speed based on temperature signals for precise thermal management.

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