"USB Device Needs Power" when inserting USB stick or iPad into keyboard

Hello,

I only have one more problem to solve and my upgrade to El Capitan will be a success. I get this message when inserting any USB device (like USB stick or iPad, iPhone, etc) into the keyboard USB input : "USB Device Needs Power Connect theDevice to a USB port on this Mac.

If I connect the USB device into any other USB port, everything is fine. I can't figure out this one.

Thanks,

JF

Jfclouti said:

Hello,

I only have one more problem to solve and my upgrade to El Capitan will be a success. I get this message when inserting any USB device (like USB stick or iPad, iPhone, etc) into the keyboard USB input : "USB Device Needs Power Connect theDevice to a USB port on this Mac.

If I connect the USB device into any other USB port, everything is fine. I can't figure out this one.

Click to expand...

This thread may go some way to helping you understand the problem :

http://www.tonymacx86.com/general-hardware-discussion/170046-solved-ipad-mini-2-not-charging-clover-bootloader.html

I suppose you use non-Apple keyboard as USB hub. This is a bug in the new El Capitan USB stack (it exists if running on Apple hardware).

The fix can be found here: https://github.com/mkhon/USBHubPowerFix