1、APPLICABLE MODELS: Notebook internal cooler is specially designed for ThinkBook 13s IML 13s IWL laptop, perfect for replacing damaged parts of your laptop. 2、4 PIN POWER CONNECTOR: Replacement laptop cooling fan utilizes a 4pin power connector to enhance heat dissipation and reduce temperature during continuous operation. 3、ENHANCED EFFICIENCY: The Replacement laptop internal cooling fan is lightweight and can help to lighten the burden of your laptop and increase the efficiency of your laptop. 4、EASY TO CONNECT: Notebook internal cooler is easy to connect, easy to operate, easy to use, easy to install and remove. 5、DURABLE MATERIAL: Replacement laptop cooling fan is made of durable material, strong and durable, not easy to be damaged, long service life. Item Type: Replacement Laptop Internal Cooling Fan Material: Aluminum Alloy, ABS Power Connection: 4 Pin Input: DC 5V/0.5A Model: for ThinkBook 13s IML 13s IWL 1 x GPU Cooling Fan