Fast charging is a godsend when our gadgets run low on juice. However, there are numerous fast charging standards in existence today, making it difficult to pick the right charger for your smartphone, laptop, or even external monitor. Furthermore, while most gadgets historically shipped with an adapter in the box, many manufacturers are now asking you to bring your own. Luckily, USB Power Delivery (USB PD) is a universal charging specification that allows you to sidestep the fragmented charger market altogether.