More like Thunderbolt than USB-C ... second display can connect directly with its USB-C port, you’ll need a USB-C-to-DisplayPort or HDMI adapter cable to connect to one of the downstream ...
Data transfer speed: iPhones with Lightning ports are limited to a slow USB 2.0 data transfer rate of just 480Mbps (480 megabits per second). Compare that to your Mac, whose Thunderbolt connection ...