In April 2009, HP introduced the ProBook s-series (standard/essential) notebooks, which consisted of the Intel powered 4410s, 4510s, and 4710s (14", 15.6", and 17.3" screens, respectively) and the AMD powered 4415s and 4515s (14" and 15.6" screens, respectively).
Aprillis 2009 tutvustati HP ProBooki S-seeria sülearvuteid, milleks olid Inteli protsessoriga 4410s, 4510s ja 4710s (vastavalt 14", 15,6" ja 17,3" ekraaniga) ja AMD protsessoriga 4415s ja 4515s (vastavalt 14" ja 15,6" ekraanidega).