Unknown Device Disconnected sounds

I am getting numerous Device Disconnected sounds and occasionally Device Connected sounds.
I am trying to trace the source of these and started looking in the event logs.
There does not appear to be any events with Critical or Error tags showing.

Should the Device Disconnected event create a log entry?

If it does not can one be created to give me a clue as to what has been disconnected?
Everything still appears to be working after a Device Disconnected sound is heard.

HW
M/b: ASUS P9X79LE
CPU: Intel i7-4930K 3.4GHz
RAM: 32GB
HDD: 2 x 2TB in RAID 1
HDD: 1 x 2TB
O/S
Windows 10 fresh install and updates to 10586.36

Look at EventID 20001 UserPnp.

How about we take a wild guess, let say the USB devices that make the sounds?

Download and run USBDeview, look at the "Last Plug\Unplug Date", you'll know which USB device from the timestamp.

I have looked for USBDeview and the sites that come up on Google all seem to want to install loads of rubbish programs including NirSoft. Do you have a direct link?

OK Got it.
Now to try to understand what it shows!