This printer ink cartridge works with: Lexmark X4900 Lexmark Z1520 Lexmark X6570 Lexmark X7550 Lexmark X4850 Lexmark X4875 Lexmark X6575 Lexmark X9575 Lexmark X4975 Lexmark X7675 Lexmark X4950 Lexmark X4975ve Lexmark X9570 Lexmark X4800 Lexmark X9350