Questions about HP ProBook 450 G5

I am looking for a USB-C docking station for this laptop, with which I can a) can operate the laptop with two monitors and which b) has its own power supply (power supply / charging of the laptop via docking station and USB-C connection).

How do I adjust the screen brightness to save battery power? Shouldn't that be possible somehow? Thanks and greetings

Who knows what is the difference between this notebook (3DN37ES#UUZ) and "the same" notebook (2UB66EA#UUZ) ? Thanks and greetings

Which graphics card(s) are installed in this model? Unfortunately, there is nothing in the description above. Does the keyboard have a backlight? If so, can you adjust it manually or does it switch on automatically?

Which docking station is suitable for the HP ProBook 450 G5 notebook?

Hello, The 3DN37ES#UUZ model specifies a maximum of 16GB of ram... I think this is a mistake and that it actually supports a maximum of 32GB of ram. Do you confirm the 16GB maximum or the error and the 32GB maximum?

What is the difference between this and the 6932438 item? The names and illustrations are identical.

We need a second power supply - which is the right replacement power supply for this computer?

Can the storage space be increased from 512 SSD to 1 GB or is there another solution with a combination of SSD and HD?

passt hier die HP Dokingstation art.nr: 711393 ?

Which HP Care Package do I need for the warranty extension to 3 years on site? Is the package for CHF 49 enough?

Does this model have a backlit keyboard?