I recently bought a replacement laptop PC from Dell and was happy to see that its AC/DC power adapter had the same ratings as the ones I had from two now-defunct Dell laptops (19.5 V, 2.3 A/45 W).

AC/DC adapters are common types of external power supply units that are used for electronic equipment and other devices that cannot draw power directly from the main network. They change the ...

While seemingly mundane, wall phone chargers — whether that's a GaN phone charger, fast charger, or just the regular USB-A charger — have become a necessary staple in your daily routine. You need it ...