My UpSquared is Aaeon type and Ubuntu 16.04 operating system in it.
I didn't see any place on the card to be able to plug a micro-SD card(or normal SD card). Can't I use SD card on this board?
There is no SDCard slot on any UP.
The operating system is stored in the eMMC chip which is available onboard.
You can install/re-install the Operating system of your choice using a normal USB stick with the installer provided by Canonical (Ubuntu) or Microsoft (Windows).
Thanks for your reply.
Can I use an Integral USB SD card on the board. When I put SD card to USB then USB to UpSquared. Is this possible to use on the board?
Or is there a way to be able to use an SD card by using I/O pins, SATA or somethin like these on the board?
You can use an external SD to USB adapter or, if you don't use the MinicPCIe slot, an internal Mini PCI Express Adapter to SD Reader.