Solitary Cable, Solitary Exterior Show
A USB-C connection can support a single display with maximum resolution of 4K at 30Hz (4K at 60Hz is possible but data speed drop from USB 3.0 to USB 2.0 speeds) in addition to delivering power and data connections to a MacBook. Solutions typically are available two types: dongles and tethered docking channels.
Dongles like Apple's USB-C Digital AV Multiport Adapter offer information and energy a la carte having an HDMI or VGA connection, but offer limited expansion that is port benefit of portability. Tethered USB-C docking stations, such as for instance Henge Docks Stone, offer extensive slot expansion choices and incorporated energy distribution to charge the MacBook, along with supporting a display that is external.
Also, Henge Docks USB-C Tethered Docking facility, rock, consists of a Mini DisplayPort connection for direct compatibility using the Apple LED Cinema show and customers that are upgrading current Mini DisplayPort adapters.
Solitary Cable, Dual External Shows
The only real Apple supported way for operating two old-fashioned outside shows (HDMI, DisplayPort, Mini DisplayPort, DVI or VGA), as well as power and information, with a solitary link with a MacBook is to use particular types of Thunderbolt 3 tethered docking channels. Some lower-end Thunderbolt 3 docks, including the CalDigit TS3 Lite, don't provide capacity to the MacBook and should not be a genuine solitary cable solution for the double display setup that is external.