5V 0.40A 4-Pin CPU Cooling Fan for Latitude E5520

Keep your system running cool with this internal CPU cooling fan replacement designed for Latitude E5520-series laptops. This fan uses a 4-wire (4-pin) connector for proper speed control and is a direct-fit replacement when your original fan is noisy, weak, or failing.

Technical Specifications

• Type: Internal laptop CPU cooling fan (blower-style)
• Voltage: DC 5V
• Current: 0.40A
• Connector: 4-wire / 4-pin fan header
• Placement: CPU cooling fan (inside laptop)

Interchangeable / Replacement Part Numbers

• 3WR3D, 03WR3D, DFS470805WL0T, MF60120V1-C140-S99, 14A-03RY-A00

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your system's specific configuration. It's essential to verify compatibility with your system or enclosure manufacturer prior to installation.

• ✔️ Latitude: E5520, E5520M

☑️ Key Features

☑️ Direct replacement for failed or noisy CPU fan
☑️ 4-wire / 4-pin connector for proper fan control
☑️ Helps restore normal operating temperatures and reduce thermal throttling
☑️ Ideal for repair, maintenance, or refurbishing projects

⚙️ Fit Notes

• Match your original fan’s part number and shape before ordering (laptop fans can vary by heatsink/graphics configuration).
• If your repair requires removing the heatsink, clean old thermal compound and reapply fresh paste (recommended: Shin-Etsu G751).