The Lexmark XC9645 is a high-volume A3 colour multifunction printer in Lexmark's XC9600-series enterprise lineup, sitting alongside the XC9635 and XC9655 also listed in this catalog. Machines in this series combine fast colour print output with copy, scan and (typically) fax, plus finishing options such as stapling or sorting, aimed at large offices and dedicated print rooms with sustained high-volume needs rather than light desktop use. The catalog listing here is brief and doesn't specify this unit's exact print speed, paper capacity or fitted finishing hardware, so a buyer with specific throughput requirements should check Lexmark's official XC9645 specification sheet before purchase.