Lexmark supplies are designed for the highest quality output, page after page. True: Accurate technology. Genuine quality. Environmental focus. It's our nature. Image: Crisp print. Professional documents. Great Impressions. Project your character. Always: Dependable. Page after page. Year after year. Count on Lexmark. Compatible Printers: Lexmark T 644 DN, Lexmark Optra T 644 DTN, Lexmark T 644 DTN, Lexmark Optra T 644, Lexmark T 644, Lexmark Optra T 644 N, Lexmark T 644 TN, Lexmark Optra T 644 TN, Unisys UDS 544-N 11, Lexmark Optra T 644 DN, Lexmark T 644 N