Fujitsu Siemens Computers will launch the first zero-watt PC at this year's CeBIT show in Germany.
The PC consumes absolutely no power in standby mode and follows on the heels of a zero-watt monitor Fujitsu launched at last year's CeBIT show.
Whilst consuming no power in standby, the machine still remains administrable, said Fujitsu.
Even if they are not being used and the screen has long gone dark, PCs and monitors connected to the main power source usually continue to consume between one and five watts of electricity in standby mode depending on the model, Fujitsu said.
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The firm said most of its business PCs already meet new EU legislation requirements for reduced power consumption in standby.
These PCs consume less than the one watt of power in standby that is stipulated by legislation that comes into effect on 5 January 2010.
CeBIT takes place on 3-8 March in Hanover.