Microsoft turned into a growth stock again after Satya Nadella, who became its CEO in 2014, drove the company to transform its desktop-based software into cloud-based services and mobile apps. It also turned Azure into the world's second-largest cloud infrastructure platform and expanded its hardware and gaming businesses.

When I think about stocks with millionaire-maker potential, I typically envision fast-growing companies with small valuations -- two characteristics Super Micro Computer (NASDAQ: SMCI) has in spades.

There were various positive developments for Super Micro this week, beyond the news that the company has a new auditor.