Each fan is with 4screws to send.
4 pin connect with the motherboard directly for automatically RGB lighting and turning.
Updatedmodel:4pin new RGB fan,as the video showed

Automatically RGB color as the video showed
Connect to motherboard.
Anti-vibration pads all four corners keep the fan super silent.
It offers incredible cooling to increase the longevity and stability of the system and components.
Cooling fan for desktop computer case and CPU cooler.
Product Properties:
Compatible CPU: Computer Case Cooling
Low Noise Level: 21.1 dBA.
Product Dimension: 120x 120 x 25mm
Air Flow: 53.02 CFM
Power: 12 V
Static Pressure: 2.5mm/H20
Connector: 4pin connector
Fan Speed: 1500 ± 10% RPM
Old Model:4pin RGB fan(stock finished)
Updated Model:4pin new RGB fan
Note:
1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 0.5-2 cm differences due to manual measurement.