Type C4 Series toner cartridge is designed for use with
Oki C7100 Series, C7300N, C7300, 7300DXN, C7350 Series, C7500, C7500N, 7500DXN, C7550HDN and C7550N. Cartridge yields approximately 10,000 pages.
Type C7 toner cartridge is designed for use with Oki
C9600hdn Color LED Printer, C9600n Color LED Printer, C9800hdn Color LED Printer and C9800n Color LED Printer. Cartridge yields approximately 15,000 pages.