I want to increase the amps to my laptop's external USB ports. How crazy is this plan? Answered
My laptop only has two external USB ports. I keep a mouse plugged into one constantly, but I now need to use an external USB drive that needs more amps than one port can supply. I use a Y cable that pulls power from two ports, but I can't use my mouse at the same time. (Which is really a non-starter with the work I'm doing.)
There are about 5 internal USB buses available, all of which have one port available, all drawing minimal power (fingerprint sensor, web cam, sd card reader, etc.)
My wacky idea is to tie the voltage pins from one of these 'spare' ports to one of the external ports to provide the amps needed, similar to what the Y-cable is doing but keeping it internal and keeping one more USB port available. I've had this laptop apart and know that I can do the wiring, but I'm curious about how high the potential is to cause massive damage.