<page_title> HP ProBook </page_title> <section_title> Timeline of releases </section_title> <table> <cell> m-series <col_header> Hewlett-Packard ProBook Release Timeline </col_header> </cell> <cell> 5320m </cell> <cell> 5330m </cell> </table>
The M-series was updated in 2010 with a 5320m and 5330m in 2011.