Hi All, I am in the process of troubleshooting connecting four 30" Apple Cinema HD displays to my 2018 15" MacBook Pro. I have connected three monitors with no problem, but the fourth absolutely refuses to be recognized. I am driving two monitors to one of the right hand side Thunderbolt 3 outputs through a Wavlink Thunderbolt 3 to dual HDMI output. The HDMI outputs go through adapters to convert them to mini display, which then drives two monitors. This works perfectly. One left side Thunderbolt 3 output drives a Caldigit TS3 plus. The HDMI output of the Caldigit TS3 plus drives another (identical to the right side) HDMI to mini display adapter to my third monitor... this also works perfectly. Here is where the problem occurs. The fourth monitor is known good since I can connect it in place of any of the three working monitors and it works perfectly. This said, when I connect this monitor to a USB3 to DVI adapter, and plug this USB3 adapter into the Caldigit TS3 plus, I get nothing. The three monitors that work all use Apple's DVI to mini display adapters, which contain a built-in USB connector that MUST be connected in order for the monitor to work. The fourth monitor does not have Apple's DVI to mini display adapter, but rather, drives a USB3 to DVI adapter. I am plugging in the fourth monitor's USB connector directly into the Caldigit TS3 plus USB A output. For the life of me, I cannot figure out why the fourth monitor is not working. All I can come up with is that for some reason, I need Apple's DVI to mini display adapter... the same one I use on the three working monitors. If this is not the problem, then I am at a loss as to why this setup isn't working. The USB3 to DVI adapter could be bad, but I have two of them and neither work. Thoughts?