https://wccftech.com/the-new-24-inch-imac-is-so-thin-at-11-5mm-that-apple-had-to-move-the-headphone-jack-to-the-side/ > The new 24-inch iMac with M1 is so razor thin that Apple had to rethink where they were going to put the headphone jack. > Apple has kept the headphone jack on the new iMac but the computer itself is so thin at 11.5mm that the company had to move it somewhere else.