Disk Activity Indicator

Disk Activity Indicator is a small application that displays a customizable icon in the system tray that will flash whenever a hard drive or USB media is accessed.

Disk Activity Indicator can be useful if your computer does not have HDD LED (laptop/ultrabook) or if you are connected to a remote computer using RDP or VNC/RFB applications. When the Settings dialog opens, you can select which logical or hard drives you want to monitor, then specify the update interval, and finally customize the icon.