USB is unplugged but MBP keeps messaging me to unplug it
Hey guys! This is my first time using this, I've had Macs for like 8 years, and I've had my current MBP for a little over a year. A couple of days ago I got the pop up in the upper right corner to unplug my USB devices and I did, but I keep getting the messages even when I close them. Any suggestions?
MacBook (13-inch Early 2008), iOS 9.1