Adding print files to an Ender 3 V3 printer connected to a Mac computer involves transferring the files from the Mac to a microSD card, which is then inserted into the printer. The process requires a card reader, a microSD card, and the appropriate software.
The benefits of adding print files to an Ender 3 V3 Mac include the ability to easily manage and organize print jobs, the ability to preview print files before printing, and the ability to pause or cancel print jobs remotely.