These printers use the 51B1000 cartridge:

Lexmark MS 317

Lexmark MS 317dn

Lexmark MS 417

Lexmark MS 417dn

Lexmark MS 517

Lexmark MS 517dn

Lexmark MS 617

Lexmark MS 617dn

Lexmark MX 317

Lexmark MX 317dn

Lexmark MX 417

Lexmark MX 417de

Lexmark MX 517

Lexmark MX 517de

Lexmark MX 617

Lexmark MX 617de