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April 17th, 2019 07:00
Fix optiplex 780 error USB subsystem configuration activity or failure
How to fix USB subsystem configuration activity or failure in dell optiplex 780 2,3,4 green light blink
speedstep
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April 17th, 2019 08:00
USB subsystem configuration activity means something plugged in is shorted out OR the port is broken off and the pins are shorted together.