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power supply
I was looking at my power supply, and I noticed it has about 20 wires
connected to my motherboard. Why so many? I was expecting maybe two - ground and +5V. Thanks. |
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power supply
wrote:
What exactly is +5VSB? Its the +5V thats there in standby mode, so you can come out of standby using the keyboard/mouse/wake on lan etc. kony wrote: On 22 Jul 2006 22:57:32 -0700, wrote: I was looking at my power supply, and I noticed it has about 20 wires connected to my motherboard. Why so many? I was expecting maybe two - ground and +5V. Thanks. Google for the ATX spec to see the functions and voltages on each rail. There are multiples of some voltages for different functions (5V vs. 5VSB) but mostly for carrying more current. By using several smaller wires they are more flexible using low cost wire than using larger wires. Further, using multiple smaller wires helps to keep the connector modular, so lower current wires don't have a smaller pin-connector and higher current rails a larger connect. |
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