Features:The built-in fan battery is charged synchronously when the host is charged.When charging, install the charging adapter and plug it into the charging position to charge.Equipped with a high-speed and silent fan to cool the host at double speed, which can improve the service life of the host.Built-in 1000 mAh battery designed to power the fan, and the host can be taken away whenever for easy heat dissipation.Designed for steam deck charging cooling. It can dissipate heat the host while charging. The bracket can be adjusted from multiple angles. The bracket fold up and clamps on the back for cooling. Specifications:Material: ABSSize: 12.3x2.5x17cm/4.84x0.98x6.69inInterface: Type-CInput: DC9V 3A/15V 3AOutput: 2.2AApplicable Models: for Steam Deck Note:Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Cooling Fan