hp prodesk 600 g2 mini

Hello, i bought mini pc HP ProDesk 600 G2 Mini with dual Display Port version. So i had 24 inch monitor which only has DP 1.4 and dual HDMI 2.0, i think it'll compatible with DP 1.2 from HP ProDesk. So i ask the seller about condition and which mod they applied. They said it was refurbished and...