how can i connect four 1080p displays to mac pro cylinder 2016 model

Hi, I am facing some problem connecting 4 FHD(1080p) displays to mac pro cylinder model through mini display to hdmi connectors, i can't see all the 4 displays at a time, i can only see any two . is there any specific connectors to be used or does apple connectors solve this problem, right now i am using 4 different brand connectors. Somewhere in internet i have read an articles says, use active connectors. can you plz suggest which are the best active connectors if that is the best way of connecting the displays.

Moshi Mini DisplayPort to HDMI Adapter (4K)

Moshi Mini DisplayPort to HDMI Adapter (4K)

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