Three-port USB A hub lets you plug in webcams, controllers, drawing tablets, and other peripherals, expanding your laptop's functionality beyond its built-in USB ports Smart cooling automatically adjusts fan speeds based on system temperatures, to keep your laptop running smoothly from idle to full load Included foam seals prevent cool air leakage and together with a high-powered 140mm fan effectively lower CPU, GPU, and surface temperatures Recommended presets keep your laptop cool in any scenario Razer Synapse lets you fine-tune fan settings to balance noise levels and achieve your preferred internal temperature. It also lets you remap the button to control volume, open apps, and perform additional functions Instantly adjust fan speed and Razer Chroma RGB lighting to align the performance with your cooling needs and desired aesthetics Works with most laptops, fitting Windows and Mac devices from 14 inches to 18 inches