Peter Altabef, the former CEO of Perot who was made president of Dell Services after the acquisition, stepped down from that position on Tuesday, Dell said.

He was replaced by Steve Schuckenbrock, head of Dell's Large Enterprise business and the executive who ran Dell Services before Altabef took over.

Dell didn't say in why Altabef was leaving and a spokeswoman declined to elaborate. "The integration of Perot is complete and it's been successful and that's what he was charged with," she said.

The services division is seen as vital to Dell. The company is trying to reduce its dependence on PC sales and earn more money from , where services play an important role.

Its Perot acquisition was designed to help it stay competitive with Hewlett-Packard, which bought the much bigger services firm EDS a few years earlier.