2TB is the the maximum capacity comaptible with the Samsung Galaxy Note 9.
What SD card does a Note 9 take?
The Samsung Galaxy Note9 supports microSD memory cards which can be purchased from any Verizon store or online. For best results, Samsung recommends using a class 10, UHS class 1, 3 or newer memory card.
How big of an SD card can I put in a galaxy S9?
400 GB
Can I use a larger SD card than listed as maximum?
You can insert the larger SD card on your device. However, most likely you will only be able to see and use the maximum specified amount of memory that can be supported by the device according to the specifications. No damage would happen neither to the device nor to the Sd card.