When you do you can plug all your other devices into your display and run them all using your Mac. If you have a USB-C display you can plug it to your Mac with one cable. You can plug your USB-C keyboard or mouse into any other device on any platform that supports USB-C and a keyboard/mouse. However, now your Mac runs USB-C you can just plug it into one of those portable power bricks, a USB car charger, or just pick up a generic USB-C charger from a nearby shop if your charger is lost or forgotten. It is so annoying when your Mac runs out of power. Or buy them from Apple at a big discount until the end of December. You can carry almost every dongle you ever might need in your coat pocket and they won’t cost you too much - but do make sure whatever dongles or accessories you do buy are compliant with standard specifications issued by the USB Implementers Forum - and do read Ars Technica’s excellent USB-C buyer’s guide. Dongles are cheapĭongles are relatively cheap, take a look at the many generic ones sold by Amazon. You can use the SanDisk Extreme Pro SD UHS-II Card USB-C Reader dongle for your Mac as a card reading interface for any USB-C device, including some Android phones. What’s important is to note that the dongles you end up needing are USB-C class devices that will work with any USB-C class device, not just Macs.