These printers use the 69G8257 cartridge:
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Lexmark 4026
Lexmark Optra E
Lexmark Optra E Plus Mac Ready
Lexmark Optra E+
Lexmark Optra EP
Lexmark Optra ES
Lexmark Optra ES Plus
Lexmark Optra Et
IBM Optra E
Nashuatec P 806
Rex 5206