TUCSON, Ariz.--(BUSINESS WIRE)--The ac/dc adapter technology has evolved over the last years and presently the technologies developed by Rompower Energy Systems Inc. increase the efficiency from 88% ...
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).
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