Hi Furio
I researched a lot, plus threw in what I knew regarding USB ports. In my laptop, there are 3 USB ports. I put my interface, and my main keyboard into 2 of those ports. The reasoning is this…if I have a problem during performance, my interface and main keyboard will most likely get me through, until I can evaluate the problem. To me, they are the 2 essential pieces I can rely on, because they are directly connected to the laptop.
My powered 8 port hub is connected to the third port. In that port, I run a Line 6 pedal, my upper keyboard, wireless mouse, and sometimes a 3rd keyboard. With powered hubs, any ports past 4 will have reduced power. Since you only derive a set amount of power from a usb port, many connections to the same port will split the power, and will make the port possibly unstable.
Thus, the “powered” hub. It basically adds power to all it’s ports, so the laptop doesn’t have to split power to several devices. The computer only has to transfer information, not power, which makes it very convenient to us gear accumulating audio nerds.
Understand, a USB cable also needs to be able to handle the power and communications. There are many cheap cables in the market, but if we don’t meet standards, problems will arise.
See This:
I cured my sticking notes during a gig, by simply turning the keyboard off/on. I later found my USB cable wasn’t making good connection, because the connector became loose fitting from many ins and outs. The laptop connection can also be worn out. I replaced the cable, and had no trouble since. Cables DO wear out, which is why I carry several spares.
My 2nd keyboard is mostly used for organs, which is why only my organs started hanging notes. Simple fix in my case…replace the cable.
Hope this helps
Corky