Belkin USB-C to Gigabit Ethernet Adapter
How to connect SD cards
If you use a DLSR or other type of stand-alone camera, it might have a way to transfer your files wirelessly. If not, you need an adapter to access the SD card, like the SanDisk Extreme Pro SD UHS-II Card USB-C Reader (US$50 on the Apple Store).
SanDisk Extreme Pro SD UHS-II Card USB-C Reader
If you have a USB-A card reader, you can try using the Apple’s US$19 USB-C to USB Adapter, or get a USB-C dock.
How to connect FireWire devices
Ugh, this one could be a problem. Apple sells a Thunderbolt to FireWire Adapter for US$29, but it has a older Thunderbolt connect that doesn’t plug into the Thunderbolt 3 port on a new MacBook Pro.
Apple Thunderbolt to FireWire Adapter
You could try daisy-chaining adapters, but that’s always risky and may not work. Plug the Thunderbolt to FireWire Adapter into Apple’s US$49 Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and then plug that into the MacBook Pro. (I haven’t tried this myself, but I’ll see if I can get my hands on both adapters and see if it works.)
An alternative (and pricey) solution is to get a USB dock with FireWire. For example, OWC’s Thunderbolt 2 Dock ($244 on Amazon) has a FireWire port, as well as five USB 3 ports, ethernet, HDMI, and more. You will need the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter to connect it to the MacBook Pro, so plan on spending an additional US$49 at the Apple Store.
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