Prepare: 1. USB wire 2. VoCore Step 1: Cut the USB wire in the middle. We use red and black wires. Clean up the USB wire.(not necessary).Tape again. :) Step 2: Connect VoCore to the wire, and connect USB to computer. Now it works, then you can find VoCore in your computer AP list. Rest please read http://vonger.cn/?p=1536. Note: 1. Some computers USB power supply is not stable, that might cause VoCore failed to reboot. MacBook, ThinkPad do not have such issue. From report, some Dell PC might have such issue. 2. Clean up is not necessary, but better to do if you want to use your USB wire in long term. :)
I do not think it is proper test. Standard USB HOST won’t output current >100mA if there is no proper device.
I think this is the reason why some PCs USB does not work.
That is not true, many device without driver might need high current output to init. It will not work on such “function” pc.
http://electronics.stackexchange.com/questions/5498/how-to-get-more-than-100ma-from-a-usb-port
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Summing it up
You may pull 100mA from a computer port. You may pull 500mA after enumeration and setting the correct configuration.
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The standard USB HOST won’t provide >100mA if there is no enumeration