# Ethernet Powered Computer

**URL:** <https://forum.kirupa.com/t/ethernet-powered-computer/146316>\
**Category:** Uncategorized\
**Created:** [April 29, 2005, 10:49pm UTC](https://forum.kirupa.com/t/ethernet-powered-computer/146316 "2005-04-29T22:49:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Maizoon](https://avatars.discourse-cdn.com/v4/letter/m/3d9bf3/32.png) [@Maizoon](https://forum.kirupa.com/u/Maizoon)\
**Post date:** [April 29, 2005, 10:49pm UTC](https://forum.kirupa.com/t/ethernet-powered-computer/146316/1 "2005-04-29T22:49:58Z")

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> Power-over-Ethernet (PoE) works because when data is sent down network cables it is represented by voltages. Some PoE equipment uses spare wires in cables that link computers back to network hubs and pump power down these. Others pump power down the same lines as the data traffic. The current PoE specifications have an upper limit of 15.4 watts.

> **[BBC NEWS | Technology | Net-powered computer goes on show](http://news.bbc.co.uk/2/hi/technology/4494899.stm)**
>
> Researchers produce a computer that gets all its power via a network cable rather than a wall socket.