Router lights blink to show real-time data activity, not just problems. Different speeds and colors indicate startup, active ...

In the olden days of disposable batteries, there wasn't much in the way of efficient power regulation. You just used the batteries until they stopped giving power, and then you chucked them in the ...

Zoomed-in view showing LEDs with labels titled WLAN, Fon, and DECT on a Wi-Fi router - Thomas Nuehnen/Getty Images Modern Wi-Fi routers give you a lot to work with in terms of troubleshooting issues ...

Blinking lights near an ethernet port on an ethernet switch - Kynny/Getty Images Have you ever looked at the back of your computer and noticed the lights where the cables are plugged into your PC?

HP printers are known for their quality. It is rare for these printers to show problems. However, users sometimes report an issue where all the lights on the printer start blinking or flashing. If you ...