Dell has announced it is to buy IT service provider Perot Systems.

Texas-based Perot Systems provides IT support to business customers such as hospitals, governments and banks.

Dell said the takeover will mean it will be able to provide a wider range of services to its customers, expanding its enterprise-solutions capabilities.

"We consider Perot Systems to be a premium asset with great people that enhances our opportunities for immediate and long-term growth", said Michael Dell, Dell's chairman and CEO.

Dell added: "The acquisition makes such great sense because of the obvious ways our businesses complement each other".

Dell is paying $3.9 billion for the company. This works out at around £2.4 billion at today's rates.