My favorite feature is a storage space in the left ear cup for the USB dongle. Logitech had this on previous generations and I’m so glad they kept it as it solves a simple but persistent problem ...

Purchase the Unifying USB receiver from Logitech. The dongle gives you the benefit of connecting six wireless devices to one ...

This clever open source hardware project is designed to bring these little receivers, such as the Logitech ... USB connector to the board. So not only does this module hide that unsightly dongle ...