https://sh.itjust.works/pictrs/image/2e42ac06-9a45-47b3-83c8-3402f159ee6b.webpIf you don’t have a dongle, the dongle is basically just hidden inside (a chip on the main board or an extension card). Being able to add dongles is a very easy way to quickly add things like wifi. Otherwise you’d have to open the PC and mount a card and the number of slots inside is also limited. So yeah, builtin is good, but also no, dongles can be better. It’s just a different option.