Whenever I plug in my USB 3.0 Gigabit Ethernet adapter, iusb3mon.exe uses 25% CPU. It will continue to use 25% CPU even after I remove the Ethernet adapter. Has anyone else encountered this issue? Is there a compatilibity issue between the Intel USB 3.0 Extensible Host Controller software and USB 3.0 Ethernet adapters?
As of this post, I have all the latest drivers installed. I've tried a clean install of the OS, software and updates, but the issue remains. USB 3.0 flash drives do not cause iusb3mon.exe to use any CPU.
Hardware / software:
Asus Zenbook UX32VD-DH71
Windows 7 Ultimate x64 SP1
Intel USB 3.0 eXtensible Host Controller Driver (version 126.96.36.199)
Startech USB 3.0 Gigabit Ethernet adapter (USB31000S)
ASIX AX88179_AX88178A Windows 7 Drivers (version 188.8.131.52)
When you plug-in your USB 3-gigabit Ethernet Adapter, it has to allocate system resources for the network device.
The resources are not freed when you unplug the adapter, because the Gigabit Ethernet driver does not stops.
There is nothing unusual in this case. Network drivers & protocols need more resources than USB 3.0 Mass storage drivers. This is done only to ensure Fast Ethernet operation.
Nothing is wrong there ...you are good ...!