I've got Acer Aspire ES 14 ES1-431-C3QT and it has only 32GB eMMC storage but when I dissassembled it I noticed there is space for 2.5'' HDD and something like a port for SATA connection (pic here). If I managed to solder some SATA connector (this thing maybe?) and BIOS will support it, is it enough make SATA port work?
It looks quite straight forward but I know nothing about voltages etc. in there.