I currently have a Lasagna fan sitting on my WinChip 2 in my i-opener. I've opened the RF shield and back plastic exposing the fan. It's getting power from the internal RS-232 serial connector (pins 9 & 10). I now need to use that serial port. Can I tie to the (unused) internal USB pads to get the same +5V volts?
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RE:+5V power from USB port (for fan)?? (modified 0 times)
Yes you should be able to, I used the same method to run a Rand Mcnally GPS receiver. I made a cable from a USB extension cable and connected it to the PS/2 power conencter on the receiver. I would think that it's safer this way since I am not sure if the 5 volt on the com port header has a fuse link, the USB does so if there was ever a short, you are less likly to melt your IO.
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