CalDigit includes the DisplayPort instead of HDMI because it supports 4K displays at a 144Hz refresh rate on macOS, while a Mac specific limitation means no dock via HDMI can get above 4K at 75Hz.

Though that's quite an investment, the portable solution will come with a protective case, HDMI cable (plus USB-C to HDMI adapter), a right-angle adapter, USB-C power adapter, and a mini tripod stand.

Whether you're a traveling exec, a gamer, or a graphic designer, a portable second monitor can add an extra dimension to your work or play. We've tested most of the major models. Check out our top ...

Share everything on your Surface with the Mini DisplayPort to HDMI 2.0 Adaptor. It connects any Surface with a DisplayPort adapter. HDMI 2.0 compatible and... 4K-ready, this is an active-format ...