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XPS 9530 - only one USB3 port running at full speed
Only the front left port can transfer data at full USB3 speed at 390+ MB/S (using an external SSD) all the others run at the same speed as the USB2 port i.e a pathetic 34 MB/S ( crystadiskmark) . I'm running the latest drivers and Bios A09 on windows 10. Have removed and reinstalled all USB drivers. Thinking of rolling back the Bios to A08.