Hi guys, I wanna buy a gift for my buddy, and he already has this laptop.

https://www.dell.com/en-us/shop/gaming-laptops/alienware-m15-ryzen-edition-r5-gaming-laptop/spd/alienware-m15-r5-laptop

The Alienware M15 Ryzen Edition R5 Gaming Laptop.

I'm not quite sure what pic related means. He has 500GB of storage, so playing any games, he always has to play Tetris with his storage settings to somehow download something new. Is a 2TB M.2 compatible with his current 500GB M2 drive, or would I need to get him another 500GB (or 2x 1TB, 2TB, etc.)?