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
Amazon.com: Lexmark MX511 (60F1000) Black Toner Standard Yield (2,500 Yield) : Office Products
Lexmark MX511de Media Present Sensor Flag, Genuine (K7663)