Can the Mac Mini support 2x 5K displays using 2x USB C to Display Port 1.4 Moshi Adapters connected to 2x 5K Display Monitors?

Hello,

According to Apple:

Support for the following combination of maximum concurrent display setups:

Up to three displays:

Two displays with 4096-by-2304 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096-by-2160 resolution at 60Hz connected via HDMI 2.0

or

Up to two displays:

One display with 5120-by-2880 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096-by-2160 resolution at 60Hz connected via HDMI 2.0

Thunderbolt 3 digital video output supports

Native DisplayPort output over USB‑C

Thunderbolt 2, DVI, and VGA output supported using adapters (sold separately)

HDMI 2.0 display video output

Support for one display with 4096-by-2160 resolution at 60Hz

DVI output using HDMI to DVI Adapter (sold separately)

If you are inquiring about the latest Mac Mini model,

have a look at > Connect multiple displays to your Mac mini (2018) - Apple Support