4K monitors have only recently become mainstream. The problem starts when we start hooking up an external monitor to match the clarity and DPI of the MacBook’s retina screen i.e., a 4K or 5K monitor. It’s no fault of our MacBook’s though - this is the tradeoff we make for portability. Please make sure to use an active DisplayPort to VGA adapter or cable.With many of us knowledge workers working from home in the COVID-19 era, our trusty Apple MacBook’s retina displays often need a bigger friend to take over the display duties. For example: Apple Cinema HD Display (M9179LL/A) and NEC LCD3090WQXI. Monitors that operate at higher resolutions than 1920 x 1200 require Dual-Link DVI adapter. Please make sure to use a regular DisplayPort to mini DisplayPort (mDP) dongle, then connect that dongle to Apple’s mini DisplayPort to Dual-Link DVI Adapter then connect to a DVI-D monitor. Please make sure to use an active DisplayPort to DVI adapter or cable.įor DisplayPort -> Dual-Link DVI monitor: Regular passive cable or adapter does not work. Please make sure to use an active DisplayPort to HDMI adapter or cable. Please make sure that you are using a high quality cable such as DisplayPort 1.2 cable to carry signal between your Thunderbolt 3 dock and your display. Also to connect in between CalDigit’s Dock and your computer, please use CalDigit’s Thunderbolt 3 cable, NOT Apple’s USB-C 2m white charging cable.įor DisplayPort -> DisplayPort or DisplayPort -> mini DisplayPort monitor: If your monitor connecting to the DisplayPort interface on CalDigit’s Thunderbolt 3 Dock has no video output, please check the monitor input settings (from OSD menu if there is one) and cable/adapter connections.

Otherwise, please check your cable and make sure that it is using DP 1.2 or higher.

If you are connecting from DisplayPort to HDMI/VGA/DVI, please make sure to use an active adapter.

Display port and hdmi not working mac