A USB device _USB Input Device_ connected

Good Day,

I have been receiving for the last week or so messages from the EMS titled "Alert Email from EMS Server" and inside there is listings of machine ids with entries such as:

A USB device _USB Input Device_ connected

A USB device _USB Input Device_ disconnected

A USB device _Intel(R) Wireless Bluetooth(R)_ connected

I have not received any alerts like this in the past so I would like to know what would have caused them to start and where I go to look at them in more detail both for the issues and the settings of the alerts. I have tried looking through the documentation but have not really found any reference to these types of alerts. Thanks in advance.

Fraser