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#1
Power Output via USB
Forgive me if this is posted in the wrong forum. I was trying to figure out which was most appropriate.
I have a Dell Precision 3520 that I use at work. I'm a physician who uses Nuance Dragon Medical Practice Edition to dictate the history portion of my note. I use a Philips SMP4000 SpeechMike Premium Air microphone, which I love. It has a cradle that also acts as a wireless transmitter for the microphone.
The cradle will work with the USB-to-computer connected, but it only trickle charges the microphone. Philips recommends that the additional micro USB port be connected to a 5V power supply to power the cradle and allow for quicker charging.
My laptop has a pass-through USB charge port, but I'm unsure of the voltage of it.
Will it hurt the laptop if I hook the 5V cradle port to the pass-through USB port on my laptop? In other words, if it puts out less than 5V, will it damage the laptop from the cradle trying to pull more voltage than what the laptop is capable of? If it won't damage the laptop and will only put out 2V, I can live with the slower charging (but would likely still be quicker than the charge from the data USB port being the only one connected).