The humble yet ever-present AC/DC wall-power adapter doesn’t get a lot of consideration from consumers. It’s one of those things that’s needed but is viewed as a necessary nuisance. I suspect that ...

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).

Trade two external power supplies for one. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Lugging around an ultra high-end laptop that's ...

Described as high-efficiency components, the 50W AD50 and 100W AD100 series ac/dc power adapters specify typical power-conversion efficiencies of 80% and 90%, respectively. Both support a universal 90 ...

Rated at 50W, four models in the DPT50 series external ac/dc power adapters feature triple outputs, each with universal inputs from 90 to 264 Vac and 127 to 300 Vdc. Voltage outputs span from 3.3 to ...