Amazon.com: Renewable Toner Compatible Toner Cartridge Replacement for Lexmark 521 52D1000 MS Series MS810 MS811 MS812 : Office Products
Source Compatible black toner cartridge, toner unit 52D1H00, 52D2H00, 52D3H00, 52D4H00, 52D5H00 for Lexmark MS810, MS811, MS812 printer on m.alibaba.com