Question about HP ProBook 450 G8

Thank you very much for the helpful information. However, three brightness levels are specified here: 1000 nits, 400 nits and 250 nits. How many nits exactly does this computer have?

I was able to find the following, I hope it helps you.

39.6 cm (15.6 inch) diagonal FHD (1920 x 1080) anti-glare display, IPS, narrow bezel, 1000 nits, 100% sRGB, built-in HP Sure View privacy screen; Anti-glare
FHD display (1920 x 1080) with 39.6 cm (15.6 inch) diagonal, IPS, narrow bezel, 400 nits, low power consumption, 100% sRGB; Anti-glare FHD display (1920 x 1080) with
39.6 cm (15.6 inch) diagonal, IPS, narrow bezel, 250 nits, 45 % NTSC; 39.6 cm (15.6 inch) diagonal anti-glare HD display (1366 x 768), narrow bezel, 250 nits, 45
% NTSC; 15.6" (39.6 cm) diagonal FHD anti-glare touchscreen (1920 x 1080), narrow bezel, 250 nits, 45 % NTSC