Below is an ever expanding list of POS printers that are confirmed working with Redfish POS. If you would like to contribute please share your successfully working printers and any settings needed to make them work correctly.
Epson
Epson TM-88V
Epson TM-T20
Epson TM-U220
Star
Star TSP100 (143) Standard Star Driver. Enable ESC/POS Print job routing in driver settings
POX-X
POS-X EVO Green
POS-X EVO Hi Speed
POS-X EVO Impact(kitchen)
PartnerTech
RP-320
SNBC
SNBC R580
Omini Print
OM9300 Use POS-x Drivers
Samsung Bixolon
SRP 350G
SRP 275