I have a USB 2.0 signal cable without power. (connects the piano with the tablet).
These are my ports / terminals:
- male, USB 2.0, type A (end of piano midi cable, without power, only signal)
- female, USB 2.0, type Micro-B (tablet input)
I have a cable connecting both of the above terminals.
Problem: the tablet doesn't charge. I want to add power to this cable so that the tablet will charge while it's connected (and it's almost all the time).
What to buy?
(I combined with various cables and adapters, and the effect is that there is either power or signal)