Legacy chargers

What works with what? While most modern laptops have embraced the USB PD standard, there are still plenty of older models using traditional barrel connectors – as well as routers, displays, storage devices and all sorts of other gadgets. There’s nothing wrong with barrel connectors, but they’re a dumb technology. With USB, the charger and device negotiate to ensure the right number of amps and volts are sent down the cable; with a barrel charger, you just get whatever comes out of the power supply, and if that blows up your laptop then so be it. Understandably, therefore, buying a spare power supply (or replacing a dead one) can be an anxious task – but it doesn’t need to be. The hardest part is often finding a supply with the right physical connector:…

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PC Pro (Digital) - 1 Issue, July 2024

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