What graphics options are available, and how many external displays can the HP ZBook Firefly 14 G7 support?

The HP ZBook Firefly 14 G7 is available with either integrated Intel UHD Graphics or the discrete NVIDIA Quadro P520 with 4 GB GDDR5 dedicated memory. Both UMA and discrete configurations can support 3 independent displays when connected to the HP UltraSlim Dock or HP Thunderbolt Dock G2, with a maximum resolution of 2.5K @60Hz on two DisplayPort outputs and FHD via VGA. Running up to two external 4K displays requires optional hybrid graphics, and the HP Thunderbolt Dock is sold separately. (Page 6)