There are many ways to go between USB-C and USB-A.
These include
- The Apple USB-C to USB adapter
- Small inline "plug" adapters
- USB-A hubs with four or more USB-A ports, which either plug into a USB-C port directly, or can be plugged into one with the aid of an adapter.
- USB-C and Thunderbolt hubs and docks that provide an assortment of ports, including USB-A ones.
- Cables with USB-C on one end, and USB-A on the other, that can substitute for USB-A to USB-A cables.]]
Which to use is largely a matter of preference (and of what other things you need to plug into your Mac), but
- If the idea is to plug in drives, make sure that the cable, adapter, etc. supports USB 3 data rates.
- If you are using a hub or dock, you'll want one with its own power supply. Even in the pre-USB-C days, if you plugged several devices into a bus-powered hub, their power demands might exceed the amount of power a computer's USB 2.0 or 3.0 host port had to offer.
You can also get cables that go from USB-C to other USB connectors. E.g. if a bus-powered drive has a USB 3.0 Micro B connector, and was bundled with a USB 3.0 Micro B to USB-A cable, you could use a USB 3.0 Micro B to USB-C cable to "cut out the middleman" and eliminate the need for a separate USB-C to USB adapter.