These printers use the 56F0Z00 cartridge:
Lexmark MS 321
Lexmark MS 321 DN
Lexmark MS 421
Lexmark MS 421 DW
Lexmark MS 421 DN
Lexmark MS 521
Lexmark MS 521 DN
Lexmark MS 621
Lexmark MS 621 DN
Lexmark MS 622
Lexmark MS 622 DE
Lexmark MX 321 ADW
Lexmark MX 321 AND
Lexmark MX 421 AND
Lexmark MX 521
Lexmark MX 521 ADE
Lexmark MX 521 DE
Lexmark MX 522 ADHE
Lexmark MX 622 ADE
Lexmark MX 622 ADHE