There's a simple check to see which Raspberry Pi 4 Model B version is sitting on your desk in-front of you.
If you look closely at the RAM chip (don't worry, there will be pictures below!) you will see one of three codes printed on it. Simply match up the code to the data below and you're away!
- 1GB - 4HBMGCJ
- 2GB - D9WHZ
- 4GB - D9WHV