Recover your data, repair your mac using the Mac Repair USB. Features and Qualities USB/USB-C Dual Connector Bootable Stick: compatible with most models, old and new, laptop, desktop or server mac computers. Included bootable installers: macOS 12 Monterey, macOS 10.15 Catalina, macOS 10.14 Mojave. Running into Issues? We typically respond within 24 hours to assist you with any problems. Supported computer models: Mac Mini, Mac Pro, MacBook Pro, MacBook Air, iMac. Bring your old mac to life: Revitalize your older mac computers by upgrading or doing a clean instal of the macOS operating system, giving your Mac a new lease on life. No internet required: Does not require an internet connection for running and installation. A solution to such errors/issues: mac is stuck on loading bar screen, mac starts up to a blank screen, folder with flashing question mark, circle with a line through it, globe icon with exclamation point mark in a triangle