usb 2 not working

Today when I attached a DAC to my Sony VPCSE's USB 2 port, I got the message "To prevent damaging your computer, the USB device drawing too much power has been disabled. Other devices may have also been disabled. When you disconnect the device drawing too much power, your other USB devices will...

Mavericks was getting a bit long in the tooth, and I finally got the courage up to attempt a fresh El Cap install on my little beasty after re-visiting this tremendous resource/community here at Tonymac. Man, you people are amazing! Thanks so much for all you do for helpless noobs such as...

Upgraded to Sierra, but now only my USB3 ports are working. Anybody with same issues?

I stumbled on this fix accidentally and don't know why or how it works. :) After clean installing Mavericks, and selecting iMac 14.1 System Def (4 USB 3 ports compatible with USB 2) in MultiBeast 6.0. I did not install the USB 3.0 option because I had been using the native AppleUSB 3.0...