I've taken another look at the Device Manager and the Logitech Headset DOES NOT appear here under USB controllers but it DOES appear as a device in the Sound box. See below.
Logitech Wireless Headset H760 feature lightweight, behind-the-head design with sculpted, pivoting ear pads, have a a noise-canceling microphone, which automatically mutes when you move the mic out of the way, also have a built-in equalizer and audiocontrols which are compatible with Windows Media Player, iTunes and allowing you to adjust volume, pause and navigate your playlist directly from your headset.
The Logitech Notebook Headset H555 delivers pure digital sound , and go home . It is a lightweight model with pivoting ear cushions that are worn behind the head . Through a USB connection , the user can rely on a purely digital stereo sound .