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http://www.digitimes.com/news/a20130717PD223.html

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Intel's 8-series chipsets, designed for Haswell-based processors, are seeing defects in their USB 3.0 feature, and although Intel has distributed fixed chipsets to motherboard and notebook players in July, products are unlikely to show up until September or October, according to sources from PC players.

The USB 3.0 ports of the 8-series chipsets will become unworkable after entering or leaving Windows sleep mode, the sources explained.

Compared to the defect issue with Intel's 6-series chipsets, the problem with the 8-series is a lot better, it has a rather low occurrence rate and can only occur under Windows 8, the sources said.

However, since the defects are not the cause of weak demand, even with the fix, consumer demand may still have trouble picking up in September, the sources noted.