Ever wanted to know when your Wii was reading your SD card? Yeah, why not, right? Well, here’s the result of one curious Wii owner who discovered that one the voltage of one of the SD card reader’s changes when in use. Just like that, a little light is installed on the Wii’s front panel that blinks away when the SD card is in use. Clever. Click through for a video demo.

[via Hack a Day]