Lexmark
99A1904
is compatible in the following Printer Models:
Lexmark Mono Laser
Optra T612 (4069-212)
Optra T612n (4069-21n)
Optra T612vn (4069-31e)
Optra T612v (4069-31v)
Lexmark T620 (4069-520)
Lexmark T620dn (4069-52N)
Lexmark T620in (4069-52N)
Lexmark T622 (4069-722)
Lexmark T622dn (4069-72N)
Lexmark T622in (4069-72N)