I had added USB 3.0 functionality (via a GMYLE BC628) to my Late 2011 17" MBP as per my earlier post. Mac OS X 10.11 El Capitan introduced a new layer of security that prevented my previous configuration from working. Fortunately, others have figured out a road back. Here are the steps: Backup everything and assume …

Here’s a USB Flash drive I created - really just hacked the guts out of a flash drive, soldered on an LED & wires and jammed it in the guts of this ugly stuffed rat I had.