MacBookPro 2016 2017Two or four Thunderbolt 3 (USB‑C) ports
with support for:
- Thunderbolt (up to 40 Gbps). Thunderbolt is a protocol.
- USB 3.1 Gen 2, up to 10 Gbps (10 Gbit/s, it's exactly the max of USB 3.1 Gen 2). USB is a protocol.
USB-C is an electronic connectors not a protocol.