Amazon.com: Toner Cartridge MLT-D203L Works for Samsung Pro Xpress M3320 M3310 M3820 M4020 M3370FD M3870 M4070FD FW M4072 Printer, Yields Up to 10,000 Pages Black : Office Products
Amazon.com: Samsung SLM4020ND-1-ULTRA High Black Toner, 15000 Yield : HP: Everything Else