SD Card Disappears from Macbook Finder

Hey all, new owner of an S2400 - getting acclimated to the machine.

I was able to enter MSC mode, and download the firmware update, prior to the update, my SD card would appear, then after an unspecific amount of time (sometimes a few second, sometimes a minute or 2) it will jsut randomly “eject”

I thought maybe the firmware update would fix this, but it still doing this after the update.

Any pointers?