Major changes at the tech giant will have a trickle-down effect on smaller companies. Here are four things to keep in mind. As the world's largest technology vendor overhauls its business, much smaller companies are certain to feel the effects. That will perhaps be most apparent in the potential spinoff of HP's personal systems group. HP accounted for more than 18% of PC purchases made by small and midsize businesses (SMBs) in the United States in 2010, according to market researcher Techaisle. That was second only to Dell, which sold one in four PCs bought by SMBs last year.

Read on Reprint from Techaisle interview with InformationWeek and article by Kevin Casey of InformationWeek.