Apple has posted two videos detailing how to how to add RAM and install MPX modules on the new Mac Pro.
How to add memory to your Mac Pro (2019)
Your Mac Pro can have up to 1.5TB of memory, and it’s easy to install yourself. Be sure to read the documentation to be sure you’re installing your DIMMs in the correct slots. If your DIMMs are in the wrong slots, you’ll be notified by macOS.
How to upgrade the graphics in your Mac Pro (2019)
The plug-and-play Mac Pro Expansion Module, or MPX Module, adds extra graphical power to your Mac Pro. And it’s easy to install. All you need is an MPX Module and a Phillips screwdriver.
You can learn more about Mac Pro and Pro Display XDR here.
How to add memory to your Mac Pro (2019)
Your Mac Pro can have up to 1.5TB of memory, and it’s easy to install yourself. Be sure to read the documentation to be sure you’re installing your DIMMs in the correct slots. If your DIMMs are in the wrong slots, you’ll be notified by macOS.
How to upgrade the graphics in your Mac Pro (2019)
The plug-and-play Mac Pro Expansion Module, or MPX Module, adds extra graphical power to your Mac Pro. And it’s easy to install. All you need is an MPX Module and a Phillips screwdriver.
You can learn more about Mac Pro and Pro Display XDR here.