DiskLED

DiskLED is a small application that indicates when your hard disk is actively transferring data. All it does is effectively flicker an LED-type icon in the system tray.

Simple GUI

Not all computer cases have HDD LEDs that flicker every time the main hard drive is working. Although it's not really a critical feature to have, some users would like to have a little light showing them that their HDD is alive and kicking. In this regard, DiskLED places the little LED in your system tray instead of your computer case and offers some options to customize it as well.

Monitoring capabilities

The program isn't limited to only monitoring your HDD, but you can set it to survey any component found in your computer, that include RAM, CPU, and a whole list of other objects. Each module found on that list can have its counter and instance changed. This way, you'll get an accurate representation of how your computer module works with the accuracy of a blinking LED.

Extra features

You can help DiskLED better calculate system activity by inputting the number you consider to be 100% of system utilization. You may specify the number of milliseconds the utility needs to update its information about your system's performance. It can also be easily moved on USB sticks and ported on other computers, and it will run easily straight from the executable file.

Conclusion

DiskLED is a lightweight and straightforward app that offers lots of monitoring options just to support a blinking LED in your system tray. Users that like to tweak things will enjoy this level of flexibility. Using any Windows performance counter as its data source, DiskLED can access pretty much every moving data in your system, starting with RAM usage or network traffic. However, all that is being reflected merely by a blinking LED.