Purchasing a power supply with the correct power rating is essential to the safe operation of any mains powered or charged device. 

At The Power Supply Shop, we're happy to say we've done the hard work for you, and promise that the replacement you purchase for your exact device is equivalent to the power rating of the original adapter.

With that said, it's useful to have an understanding of the meaning behind the numbers.

The pin (or plug) size is crucial when sourcing a replacement power supply, charger or adapter. Many manufacturers of electronic devices use their own specification of pin size which can vary across type of device and even variations of model.

Whilst great strides have been taken with chargable devices with the introduction of USB 3.0 (providing a maximum of 1.5A through a dedicated charging port such as on a laptop or smartphone), mains powered devices still use a wide range of pin sizes.