These printers use the S2593 cartridge:

NEC IT-2530

NEC IT 2530 MFP

NEC IT-2530D

NEC IT 2840

NEC IT_2840D

NEC IT-3530

NEC IT-3530D

NEC IT 3640

NEC IT-3640D

Develop ineo 222

Konica-Minolta Bizhub 200

Konica-Minolta Bizhub 222

Konica-Minolta Bizhub 250

Konica-Minolta Bizhub 282