NWOE Remanufactured Universal Extra High Yield Toner Cartridge for Lexmark T640/T642/T644/T646/X642/X644/X646 - Northwoods Printers
LD Remanufactured Replacements for Lexmark X644H11A Set of 4 High Yield Black Laser Toner Cartridges for use in Lexmark X642e, X644e, X646dte, X646e, and X646ef s - Walmart.com
PCI Brand® Lexmark X644H11A Black Toner Cartridge Replacement - Premium Compatibles, Inc.
LD Remanufactured Replacements for Lexmark X644H11A Set of 2 High Yield Black Laser Toner Cartridges for use in Lexmark X642e, X644e, X646dte, X646e, and X646ef s - Walmart.com
LD Remanufactured Replacements for Lexmark X644H11A Set of 5 High Yield Black Laser Toner Cartridges for use in Lexmark X642e, X644e, X646dte, X646e, and X646ef s - Walmart.com