This is a bootable USB installer containing macOS Monterey which I have installed onto a USB stick. This is a USB/USB 2 stick, NOT USB-C! If your Mac has only a USB-C port, then you have to use an adapter with this item. This software is freely downloadable. I charge for the service of making bootable macOS installer sticks, for the USB sticks themselves, as well as for postage and packaging. No Copyright is being breached here and no licence is required for this. Before buying this item, please check on the relevant websites and search for Monterey to see if your Mac model is supported by macOS Big Sur. In general this version of macOS is for Macs released as from 2015 onwards. There are three Mac models from 2013-2014 which can run it.