The sources said that Apple is in later negotiations to acquire Anobit for $400 million to $500 million.
Anobit has developed a chip that improves flash drive performance through signal processing. The chip is already integrated in Apple devices like the iPhone, iPad and the MacBook Air.
Anobit was not instantly presented for comment. Apple could not directly be reached for comment outside usual business hours.
Anobit has lifted $76 million from Battery Ventures, Pitango Venture Capital and Intel Capital since its founding in 2006.