These printers use the 12B0090 cartridge:

Lexmark Optra W-820

Lexmark Optra W-820 DN

Lexmark Optra W-820 N

Lexmark W 820

Lexmark W 820 DN

Lexmark W 820 E MFP

Lexmark W 820 N

Lexmark X 820 E

Lexmark X 820 E MFP

Burroughs-Unisys UDS 45 W

Riso-Corporation M 820

Riso-Corporation P 820