Dell has announced plans to incorporate Sim card slots into future laptop models to allow users to connect to the internet via 3G links as well as Wi-Fi.

An HSDPA aerial will be built into the laptops that is interoperable with current 3G services offered by Vodafone. The technology will not be built in as standard, but will be available as an option on laptops sold in Europe.

"This is another important step in providing world-class mobile broadband technology to Dell customers," said Jeff Kimbell, director of business marketing for Dell EMEA.

"With Dell and Vodafone working together, customers can benefit from built-in, easy-to-use technology which provides access to the 3G wireless network deployed broadly worldwide."

The laptops will be aimed at the business market where speed and reliability of connections is often more important than cost. The first 3G laptops will be available by the end of the year.

Rachel Lashford, an analyst at Canalys, said: "It's just a question of first-move advantage. The 3G PC cards have had a lot of success and that's the key driver. A partnership with Vodafone is high profile for Dell as well."