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Power-Over-Ethernet could end up being a universal power supply for much computer hardware as the cables and connectors for it are the same all over the world.
BBC: NEWS | Technology | Net-powered computer goes on show
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Perfect for slipping into a laptop bag or pocket, all of Iomega's 2.5-inch portable hard drives are host powered, requiring no external power supply beyond the power provided through the USB bus on a personal computer, laptop or netbook.
ENGADGET: Iomega pushes ahead with USB 3.0 transition, promises to keep drives at USB 2.0 prices
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This computer has no internal power supply, but when a specially designed reader sends out a radio signal, a tiny antenna draws power from the wave and uses it to wake the computer up.
ECONOMIST: High-tech passports are not working
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The more powerful a computer becomes, the more complex its power supply becomes too.
FORBES: Perfect Power: Clean Energy's Killer App
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The PC power supply is probably the most failure-prone item in a personal computer.
FORBES: Perfect Power: Clean Energy's Killer App
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From there, the One connects to a power supply and either your iPad, iPhone, iPod touch or Apple computer of choice for that dual-tracking capture.
ENGADGET
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But experts say a successful, large-scale attack on U.S. computer systems could hobble electric-power grids, transportation networks and industrial-supply chains.
CNN: U.S. at risk of cyberattacks, experts say