I have a Mac Book Pro 2017 two Thunderbolts 3 ports. I purchased the Plugable usb-c 4k docking station and two displayport HDMI 2.0 active adapters. I have plugged the display ports with two monitors and one monitor to the HD post in the back of the docking station. Displaylink is active.
This is the problem. I go to arrange my displays in settings and two displays behave as one. While there are 4 displays including the Built-in Retina Display, View Sonic Monitors x2476 (1), View Sonic Monitors x2476 (2), View Sonic Monitors x2476 (3), and View Sonic Monitors x2476 (4). It will only recognize three of them which explains the mirroring.
Can someone please help?