The Raspberry Pi 4 Case Fan is an official accessory for Raspberry Pi 4, for use with the official Raspberry Pi 4 Case. Designed for over-clockers and other power users, it keeps your Raspberry Pi 4 at a comfortable operating temperature even under heavy load.

Features:

• Fits perfectly into the lid of the Raspberry Pi 4 Case
• Temperature-controlled fan delivers up to 1.4 CFM of air flow over the processor, memory, and power management IC
• 18 mm × 18 mm × 10 mm heatsink with self-adhesive pad improves heat transfer from the processor

Specification:

• Input voltage: 5V DC supplied via 40-pin GPIO header on Raspberry Pi 4
• Fan speed control: Pulse width modulation control via user-selectable GPIO pin
• Maximum airflow: 1.4 CFM