So maybe the light only comes on with actual Dell systems that support being controlled by that Power button. When she connects her Lenovo system to the dock, the dock's light doesn't light up even though the dock works perfectly fine. They seem popular for Mac users.Īs for the power light, my wife has a personal Dell system and a work Lenovo system. If you ONLY want to use a dock with your Mac, you might want to consider a CalDigit dock. You might have more luck with a WD19TB, which is a Thunderbolt 3 dock, but I'm not sure. But even there you're limited to two displays, whereas on a PC you could run 3 or 4, depending on the exact displays you're using. The only way Macs can run multiple displays from a single output connector is through Thunderbolt 3, which is possible because TB3 can carry two independent DisplayPort interfaces from the GPU, so in that situation macOS just allocates one interface to each display. This has been a complaint on this forum, the Apple forums, and elsewhere on the Internet for years.

macOS still does not support DisplayPort MST. As a result, it only has access to a single DisplayPort interface from the source system, which in turn means that in order to run multiple displays, the source system has to support DisplayPort MST, which is the ability to divide the bandwidth of a single DisplayPort interface across multiple independent displays. The issue is that the WD19 is just a regular USB-C dock, not a Thunderbolt dock.

Multi display for mac book pro