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.
Upgrade/Replace SSD and RAM on Acer Aspire ES11 ES1 132 C2HG - YouTube
Acer Aspire ES1-132 Laptop Hard Drive Replacement - LaptopHDS.com