PROMon.exe
(Intel)
Intel PRO Monitor program which sits in the System Tray. This icon gets installed by the drivers for the Intel Pro network cards. By default it simply sits in the tray and displays LEDs which give you information on the network traffic going through your Intel Pro network card. You can also double-click on it to access diagnostic features, configuration data, and setup screens.
Recommendation :
This task and its associated icon are not needed for the proper operation of your Intel Pro network card, so you may disable PROMON with Startup Manager if you want to free up space in your System Tray.