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.
Acer Aspire One Cloudbook 11 11.6" Laptop, Intel Celeron N3050, 2GB RAM, 32GB SSD, Windows 10 Home, Mineral Gray, AO1-131-C1G9 - Walmart.com
Sata Hard Drive Cable Ssd Hdd Connector Cable For Acer Aspires Es1-132 C9nt Es1-132-c5xh A311-31 Es1-332 Dd0zhphd000 - Pc Hardware Cables & Adapters - AliExpress