Issue solved: the usb power cable (white) doesn't work for some reason: the lights up iusb power led, but not enough juice i guess? I tried 120v wart and works good
You misunderstand what that white cable (USB-A to barrel) is for. It is for using iUSB to power up Logitech's Squeezebox, not for using your PC's USB port to power up the iUSB. Also, the whole point of iUSB is so that you can use the included ULN adapter (or iPower if you have the latest version) for its cleaner power. Plus, white cable only taps into USB 5V supply while ULN / iPower is 9V, hence why you can't power up the iUSB properly.