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Redditor finds heavy block of iron shavings inside cheap PSU, also appears to lack safety protections
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
XPS are the exception to the rule of Dell's quality, really. I guess the Precisions were also half decent, but I never bothered with them - they were ThinkPads but worse for the same price. Everything else is mediocre to bad.