Ultrabook owners stuck with USB Type-C now have more options to expand their existing Thunderbolt 3 ports and support a variety of legacy connections including eSATA and USB Type-A. The pricey adapters support daisy-chaining and will work with both PCs and Macs to utilize the most out of a single Thunderbolt 3 port.
https://www.notebookcheck.net/StarTech-launches-Thunderbolt-3-to-USB-Type-C-adapters-for-high-bandwidth-applications.299336.0.html
How is that "Thunderbolt 3 to USB Type-C" adapter? Thunderbolt 3 is USB Type-C socket.