Marco Arment:

Having four USB-C ports is awesome.

Having only four USB-C ports is going to hurt the versatility requirement of pro gear, because there’s a very real chance that you won’t have the right dongle when you need it.

This is going to happen a lot, because even though USB-C is the future, it’s definitely not the present. We’ve had the standard USB plug (USB-A) in widespread use for 18 years, and it’s going to take a few more years for USB-C to become so ubiquitous that we can get away without USB-A ports most of the time.

A pro laptop released today should definitely have USB-C ports — mostly USB-C ports, even — but it should also have at least one USB-A port.

I currently have dongles to plug in my existing Time Machine drive (USB-C to USB-B, picture here) and another to plug my Cinema Display into my new MacBook Pro (USB-C/Thunderbolt 3 to Mini Display Port/Thunderbolt 2, picture here). Tap both pics to embiggen.

Will I need more dongles? Undoubtedly. Marco is arguing that the MacBook Pro is too forward thinking and should have been designed for the present. My machine will arrive in a few weeks. I’ll stew in the soup, have a better sense of things once I live in the brave new dongular world for a while.