I want more storage

I’m using a 128g eMMC for booting and for reasons I’m down to one usb port that I want access to (I don’t want to use a usb for storage) I was wondering what’s the storage cap when it comes to SD cards or if there is another way.

There’s no storage cap. MicroSD up to 2TB are supported on all of the boards. It depends on what filesystem you use.

Thank you so much, I’m using the Ubuntu distro on this site so I’ll do more research