Crack Driver Booster 9 Pro refers to a pirated version of the Driver Booster 9 Pro software, which is a tool developed by IObit to help users update and manage their computer drivers. The legitimate Driver Booster 9 Pro offers features such as automatic driver updates, system optimization, and enhanced hardware performance. However, using a cracked version means bypassing the legal purchasing process, which can lead to security risks, lack of support, and potential legal consequences. It’s always advisable to use genuine software to ensure safety and proper functionality.