Nounours_93 Posted August 19, 2013 Share Posted August 19, 2013 Hi all, I've just assembled a new PC with a Gigabyte GA-Z77-D3H in a Corsair 550D. I've installed Windows 7 Home Premium X64 and last Intel USB 3.0 Drivers. When I plug my external 2.5" HDD 1 To Western Digital USB 3.0 on a USB 3.0 of the mother board rear panel, I have a clean transfer rate of around 70-80 Mo/s. But when I plug the same HDD on the 2 USB 3.0 of the front panel of the 550D, I have result like that : transfer around 70-80 Mo/s and a drop to 0 Mo/s for 20-30s then 70-80 Mo/s for a few second, and again a drop to 0 Mo/s ... it's totally unusable ! I've made a transfer of some large files, it takes a very long time, and all the files were corrupted ! I've tried those ports with a USB 2.0 Key and a USB 2.0 external 2.5" HDD and it work normally (around 35-40 Mo/s) ... Please help me !!! Frédéric Link to comment Share on other sites More sharing options...
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