Instead of using usb in mass storage mode like on the older phones, most/all htc phones (and all Nexus devices) from 2012 (android 4.1 and up) and onwards uses MTP mode for usb connections.
I’m forever going to be a Mac, never a PC. But today I discovered that being a Mac gives you unneeded issues when it comes to connecting a Windows Phone to the iOS software. I spent literally hours today trying to figure out how to sync my new 8X to my Mac, just so I could put some new music on my phone. It was a long haul, but I finally got there! So, instead of just “buying a real computer”, (thanks Craig! ;)), I figured I should share my new found knowledge with you guys so it helps anyone else out with a Mac that may encounter the same issues I had!