Schau mal hier http://www.macworld.com/article/3136583/macbook-accessories/macbook-pro-thunderbolt-3-adapter-guide-how-to-connect-an-iphone-display-hard-drive-and-more.html
So was? Griffin BreakSafe Magnetisches USB-C Kabel - Schwarz https://www.amazon.de/dp/B01CQTK6GU/ref=cm_sw_r_cp_api_LfLszbB7C5SA9