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.
Putting SSD into Aspire ES1-132-C8WF — Acer Community
SATA Hard Drive Cable SSD HDD Connector Cable for Acer Aspires ES1-132 C9NT ES1-132-C5XH A311-31 ES1-332 DD0ZHPHD000 - AliExpress
How to upgrade Aspire ES1-132 to have a HDD. — Acer Community
For Acer ES1-132 C9NT ES1-132-C5XH A311-31 ES1-332 ES1-332-C136 ES1-332-C3V4 laptop SATA Hard Drive HDD SSD Connector Flex Cable - AliExpress
OFFTEK 8GB Replacement Memory RAM Upgrade for Acer Aspire ES1-132-C37M (DDR3-12800) Laptop Memory at Amazon.com
Upgrade SSD on Acer Aspire ES 11 ES1 132 C7XC - YouTube