Plugable USB-C 4K Triple Display Docking Station with Charging Support for Speci. Plugable USB-C 4K Triple Display Docking Station with Charging Support for Speci NOT macOS COMPATIBLE.. 4 version and later. The Plugable UD-ULTC4K USB-C Docking Station provides up to three additional display outputs via a combination of USB-C DisplayPort Alternate Mode (“Alt Mode”) and DisplayLink USB graphics. All through a single USB-C cable. See important notes regarding Alt Mode and PD compatibility below. Graphics Performance Main HDMI port utilizes USB-C Alt Mode, a direct “pipeline” to the host graphics processor (GPU). Connected monitor will perform as if natively attached. The 2nd-3rd outputs are powered by DisplayLink DL- which leverages …..