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T20, Win 7 - Missing "SM Bus Controller" and "Universal Serial Bus (USB) Controller" in Dev Mgr

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I'm running Win 7 x64 Ultimate on a new PowerEdge T20, base model.  I had a license for Win 7 so I installed it.  The system disk is a RAID 5 array of 3 x 120 GB SSDs, and the 4th SATA port runs an HDD that provides additional internal backup.

The thing works spectacularly well for its purpose as an SVN server - it all works - but I'm following up on a couple of small mysteries...

In the Device Manager, I see two devices listed in the "Other devices" category where Windows apparently failed to find a driver:

Since I am successfully able to monitor things like motherboard temperatures, and also to read/write USB devices from both the USB2 and USB3 ports, this seems just academic.

Should I seek drivers for these things, or just ignore this?

-Noel


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