*** USED TONER CARTRIDGE MUST BE RECIEVED PRIOR TO REPLACEMENT TONER CARTRIDGE BEING SENT TO CUSTOMER *** Use in the following printers: Compatible Lexmark models: 4049, 4039 Model 10 Plus, Optra L Series, Optra Lx, Optra Lx Plus, Optra Lxi, Optra Lxi Plus, Optra Lxn Plus, Optra R Series, Optra R Plus, Optra R Plus Pro, Optra Rt Plus, Optra Rx * Compatible IBM models: 3112 Model 001, 3116 Model 001, 3116 Model 002, 3116 Model 003 * Compatible Genicom models: 7912L, 7912L CX, 7912L TX, 7912R, 7912R CX, 7912R TX, 7916L, 7916L CX, 7916L TX, 7916R CX, 7916R TX, 7918 L, 7918R * Compatible Unysis models: AP 9510, AP 9512, AP 9516-Lx, AP 9516-Rx, UDS 9616 * Compatible Facit models: P8165, P8166, P8167