These printers use the MLT-D105 cartridge:

Samsung ML 1910

Samsung ML 1915

Samsung ML 2525

Samsung ML 2525 W

Samsung ML 2540

Samsung ML 2545

Samsung ML 2580 N

Samsung SCX 4600

Samsung SCX 4623 FN

Samsung SCX 4623 F

Samsung SCX 4623 FW

Samsung SF 650

Samsung SF 650 P