While the Steam Deck comes with 64GB, 256GB, or 512GB SSDs, you can also use a microSD card to install games. And likely for all model owners, this is going to be an essential part of the experience.
XDA Developers on MSN
Proxmox on microSD cards is technically possible, but terrible transfer speeds aren't the only problem
MicroSD cards can boot Proxmox, but their low endurance and slow speeds will punish you for trying ...
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