Type dmesg to look at the boot messages. You should see a bunch of lines that talk about cm109
And if you type in lsusb you should see a reference to C-Media Electronics Audio Adapter but no mention of CM108This guide was first published on Sep 17, 2013. It was last updated on Nov 16, 2018. This page (CM109 Type) was last updated on May 09, 2018.