Can the Plugable ThunderboltTM 3 Dual DisplayPort Adapter for Mac be used for HDMI inputs?

Thunderbolt TBT3-DP2X-83
1

I would like to use the adapter to port the input from 2 HDMI cameras.

2

Thanks for asking! Unfortunately no; this device only serves as an HDMI output; it will not work for HDMI input.

Best wishes,
Gary