Reddit, I opened up my Acer Aspire One (ES1-132) recently in the hopes of upgrading the 32GB SSD. It turns out the SSD is eMMC so it is soldered to the motherboard.
HARD disk upgrade for Acer Aspire ES1-132-C22B — Acer Community
Jual Laptop Bekas 12 inch Murah - Acer Aspire ES1 132 - Full Upgrade SSD dan Ram 4gb | LSM