Amazon.com: Lexmark 24015SA Laser Toner Cartridge - Black, Works for E234n, E234tn, E240, E240n : Office Products
Lexmark E240 Toner Cartridges - 4inkjets
Clover Remanufactured Universal High Yield Toner Cartridge for Lexmark E230/E232/E240/E330/E340, Dell 1700/1710, IBM 1412/1512 - GreenLine Paper Company