Bornagainst has posted regarding using the passthrough on a Mac laptop. I wish I could recall what he has said--the only thing I can remember is that he said you need to use a USB port on a particular side of the laptop. I just can't remember "which" side of the laptop he referred to using.
If he doesn't pop in here shortly to answer your question, you might consider sending him a private message and asking his advice for this issue.
Sorry I don't have the answers you are seeking, but hopefully this will lead you to someone who can help.
I thought he said buy a PC ..... no he didn't.
Here's a thread on that subject...http://www.e-cigarette-forum.com/forum/vapor4life/77740-power-surge-usb-port.html
I think I said thats why... I'm a PC.
Don't use premium cartos on a PT connected to a computer. Or add current limiting (which kinda defeats the purpose)
Their resistance is low enough that it crosses the threshold of current delivery spec'd for USB 2.0. USB 3.0 will be/is ok though.
Doesn't the current requirement of even the old standard cartomizers exceed the standard (no Battery Charging Standard) USB 2.0 output specification (500mA)?
And Windows 7 was a BAD idea.
*giggle*