Dell Inc is selling its Dell Services information technology unit to NTT Data Inc for just over $US3 billion ($A3.99 billion) as part of its ongoing reorganisation plan.
Dell had purchased the business for $US3.9 billion in 2009 when it was Perot Systems, founded by billionaire and one time presidential candidate Ross Perot.
The sale comes as privately-held Dell prepares to buy data storage provider EMC for $US67 billion and tries to reinvent itself as more than just a personal computer company.
That deal was announced in October and was initially targeted to close in the second or third quarter of Dell's fiscal year ending February 3, 2017.
Japan-based NTT Data focuses on information technology in the medical field, including medical records and billing.
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In a statement, NTT Data said the acquisition will help "strengthen its leadership position" in the services market, while also initiating a relationship with Dell.
The company has been expanding its services globally, recently making deals that give it greater reach into the Philippines, Taiwan, and Costa Rica, among other initiatives.
