How can I see the remaining storage on the microSD card?

I got an Organelle M about a month ago and so far it has been one of the best synth experiences I’ve ever had! I love how deep the rabbit hole goes and I’m excited to continue diving.

Is there any way for me to see how much storage I have remaining on the SD card? I have a lot of patches I’m interested in downloading / making, and I want to ensure I don’t accidentally overload it at some point. My computer (windows 10) won’t let me see info about it until I reformat it, which I do NOT plan on doing, so I’m unsure.

Also, tangentially related: how do I download something off the Organelle M over wifi? The server has options for uploading, zipping, unzipping, and deleting files, but it doesn’t look like you can actually re-download a copy of a file (once again, this is so I can put my favorite patches/presets on a USB drive to free up storage on the SD.)