What is PPS? Can PPS give laptop chargers?

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Before the release of USB PD, mobile phone fast charging standards showed standards such as QC2.03.0, MTK PE, FCP/SCP, AFC, VOOC/DASH, and so on. USB-IF sees this situation and introduces a subset of the PPS system in the latest USB PD3.0 specification for backward compatibility with the charging of mobile phone devices.