Features:

Compatible with the pins of for Raspberry Pi 40P, direct plug use.

Pins and GPIO functions are clear at a glance, all GPIOs are led out, and the heat dissipation prompt does not affect development and use
The switch controls the cooling plate fan and LED. It is recommended to keep it on when using for Raspberry Pi 4B.
Increase the height difference between the heat sink and the motherboard, and expand the negative pressure area to dissipate heat more effectively
After installation, the heat sink icon can show LCD color light (using special PCB technology, glare effect)
Increase the airflow range, speed up the heat removal speed, inhale air at the bottom and air out at the side.
Using hydraulic bearing fan, lower operating noise and longer service life than ordinary fan

Sepecifications:
Voltage: DC 5V
Current: <200mA
Bearing structure: hydraulic bearing
Temperature range: -10+80℃
Speed: 6000+5%RPM
Size: 65*56*10mm
Applicable to: for Raspberry Pi 4B/3B+/3B/3A+

Package includes:
1 x Expanstion Board
1Set x Screws and Nuts