These printers use the 842124 cartridge:

Ricoh MP 2554

Ricoh MP 2555

Ricoh MP 3054

Ricoh MP 3055

Ricoh MP 3554

Ricoh MP 3555

Lanier MP 2554

Lanier MP 2555

Lanier MP 3054

Lanier MP 3055

Lanier MP 3554

Lanier MP 3555

Savin MP 2554

Savin MP 2555

Savin MP 3054

Savin MP 3055

Savin MP 3554

Savin MP 3555