I am having random disconnection issues with the 2 USB 3.0 ports on my newly purchased XPS L702X.
It is completely unrelated to the device and occurs at no specific interval and is only recoverable with a reboot.
Based on a Dell Support Forum - XPS 15 - USB 3.0 Problems, this issue has existed since the 1st generation release late 2010 of the current XPS series and appears to affect many users.
Based on feedback, consumers who contact Dell for resolution end up with no resolution despite motherboard/daughterboard replacements.
Also, a Renesas controller driver upgrade or rollback does not cure the issue either.
I am starting this discussion to find others who have encountered this issue as well and have either found a resolution to actually using the 3.0 ports or who may have not yet spoken up... This issue has gone on far too long without resolution and in order to get Dell to take this defect seriously, everyone affected needs to read the forum and take part in the descussion,
Please post any information you have... even if you have an XPS Laptop current model 1st and 2nd generation without 3.0 issues... you too can help find the solution.
Thanks

Sm Bus Controller Driver For Del Xps 8500 Drivers

Sm Bus Controller Driver For Del Xps 8500 Pro

Based on a Dell Support Forum - XPS 15 - USB 3.0 Problems, this issue has. Also, a Renesas controller driver upgrade or rollback does not cure the issue. Right expand Universal Serial Bus Controllers. There should be two lines with weird. System: Dell XPS 8500 OPS: Windows 7 64bit After doing a clean install of Windows 7 I am missing drivers. Listed in other devices are: Ethernet Controller, Network Controller, PCI Simple Communications Controller, and SM Bus Controller. Jun 24, 2012 - If you have, then you need to install the drivers in the correct order, or some devices may not. My system is XPS 8500, need to install SM bus.

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