![]() This additional heat generation is usually insignificant in relation to the amount of heat a fan moves away from the laptop. Inside the laptop, the USB power-supply has to output an additional amount of watts for the USB-powered fan, thus generating a small amount of additional heat. Without correct protection, such devices can cause damage to the USB power supply. ![]() Poorly designed coolers may use fans which draw more current than allowed by the USB standard. The fan speed is adjusted manually or automatically on certain models and on others stays at a fixed speed. Some active coolers draw heat from the underside of the computer others work in the opposite way – by blowing cool air towards the machine. Additionally, many cooler pads come with a built-in USB hub, so as not to consume one of the laptop's often limited number of USB ports. Coolers typically run on power drawn through one of the laptop's USB ports. The number of laptop cooler fans usually ranges from 1 to 6. This helps convect heat away from the device. Active coolers move air or liquid to direct heat away from the laptop quickly, while passive methods may rely on thermally conductive materials or increasing passive airflow.Īctive coolers use small fans to generate additional airflow around the body of the laptop. ![]() A cooling pad may house active or passive cooling methods and rests beneath the laptop. ![]() Laptop coolers are intended to protect both the laptop from overheating and the user from suffering heat related discomfort. A laptop/notebook cooler, cooling pad, cooler pad or chill mat is an accessory for laptop computers intended to reduce their operating temperature when the laptop is unable to sufficiently cool itself. ![]()
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