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After charger, Apple removes USB-C cable from the box
(www.gizmochina.com)
This is a most excellent place for technology news and articles.
I honestly only got a USB-C hub because the laptop didn't have an HDMI port, so if we count the USB-C hub, the HDMI port is the most used port on both my work and home laptops. If we ignore the USB-C hub, it's second only to the USB-A port, which my kids use for a mouse to play Minecraft (I rarely use it personally).