Just got one of these today, kinda happy with it, especially as a bit of a beginner system!

FYI - if you want to programmatically change the brightness (as I’m seeing in older posts):

CAUTION - This worked for me, but involves enabling scary flags and setting potentially unsafe values to the monitor. Exercise caution.

Edit vi /boot/config.txt
Add:

dtparam=i2c2_iknowwhatimdoing

Reboot

Then sudo apt-get install ddcutil

Run sudo ddcutil detect
You should see an output like:

pi@raspberrypi:~ $ sudo ddcutil detect
Display 1
   I2C bus:             /dev/i2c-2
   EDID synopsis:
      Mfg id:           RTK
      Model:            RTK FHD
      Serial number:    [redacted]
      Manufacture year: 2011
      EDID version:     1.3
   VCP version:         2.2

If you do, you can then run:
sudo ddcutil getvcp 10 to get the brightness
and
sudo ddcutil setvcp 10 [1-100] to set the brightness, where 1-100 is the desired value of the brightness