If the printer truly says only "POS8220" with no brand, your best bets are:
Disclaimer: The POS8220 is a generic model number. Always verify your manufacturer's label on the bottom of the unit before installing unsigned drivers. thermal receipt printer pos8220 driver download hot
For a reliable alternative, POS-X offers a thermal receipt driver (v4.64) compatible with most 80mm Windows 10/11 printers. Quick Setup Guide If the printer truly says only "POS8220" with