Manufacturer Lexmark: #56F0Z00. Compatible with Lexmark models: M1242, M1246, M3250, M3252MB : MB2338adw, MB2442adwe, MB2650adweMS : MS321DN, MS421DN, MS421DW, MS521DN, MS621DN, MS622DEMX : MX321ADN, MX321ADW, MX421ADE, MX521ADE, MX521DE, MX522ADHE, MX622ADE, MX622ADHEXM : XM1242, XM1246, XM3250, XM3252.
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