MICR Toner Drum MX310 MX410 MX510 MX511 MX610 - Sun Data Supply
Amazon.com: Lexmark 602 High Yield Toner Cartridge : Office Products
Lexmark MX511de Toner Replacement from $49.95
Toner Bank Compatible Lexmark 601 60F1000 High Yield Black Laser Toner Cartridge for use in MX310dn, MX410de, MX510de, MX511de, MX511dhe, MX511dte, MX610de, MX611de, MX611dhe, & MX611dte - Walmart.com
Lexmark MX511 (500Z) Return Program Imaging Unit (60,000 Yield) - Newegg.com