How to increase the voltage on the usb ports of a laptop?

Question

USB

I have an HP Envy dv7 laptop, is it possible to increase the voltage on the usb ports? Maybe what to eat? I couldn't find it on the net for my laptop

Screen

Answer 1

If you meant current strength, then if ChargeUSB is not supported, then no way. I have it on ASUS, it gives out up to 2.1 amperes.

Answer 2

If it is really necessary, then you will have to redo the circuit, and it is not a fact that it can be done at all. To begin with, you still have to find the name of the board in the laptop (it's not written anywhere outside, and it's not in the documentation either). By name, we are looking for a scheme (if it is in at least some access). According to the diagram, we look at how the USB ports are powered, and we find out that the PWM has a fixed voltage of 5V, and in addition to USB, it powers half of the board. Further, if you need to raise the CURRENT, then we look to see if there are current limiters on the ports (there may be one for 2 ports, or for each separately), or not at all. If there is, we are studying the possibility of betting with a larger limit or setting it up if it is configured (resistors or something else). If all else fails, we cut off the power line from the ports, make a separate power supply somewhere, somehow coordinate it with the rest of the power system,