10-20 Troubleshooting guide/General system information
USB memory
Symptom Possible cause Possible solution
The system does not recognize a USB device. A USB extension cable is used. Do not use a USB extension cable.
A USB HUB is used. Do not use a USB HUB.
A USB device is rapidly connected to or disconnected
from the USB connector.
Slowly connect or disconnect the USB device.
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