That one only does 4k at 30 Hz (acceptable to some, not relevant if you're connecting a FHD display). But others -- even cheaper ones, in fact -- seem to do 4k at 60Hz (HDMI 2.0).
Apple really should be including an HDMI 2.0 adapter with every USB-C only laptop. Instead they're selling an HDMI 1.4 adapter for $69. Kind of insulting.
Not that other manufacturers are better. Dell's new XPS 13 is USB-C only and I'm sure there's no adapter in the box. They sell a "mini-dock" which includes Ethernet and VGA (!) in addition to HDMI (indeterminate version) for $59.
Apple really should be including an HDMI 2.0 adapter with every USB-C only laptop. Instead they're selling an HDMI 1.4 adapter for $69. Kind of insulting.
Not that other manufacturers are better. Dell's new XPS 13 is USB-C only and I'm sure there's no adapter in the box. They sell a "mini-dock" which includes Ethernet and VGA (!) in addition to HDMI (indeterminate version) for $59.