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Flashing red The device is either powering up or is totally blocked. When
totally blocked, no authentication methods are available to allow
a user to log into the device; this indicates that the device needs
to be recycled.
Solid red The device is locked.
Blue LED Indicates a data transfer activity for all devices.
Flashing red and
blue
Indicates that a fatal internal error has occurred.
Status of power to device
Solid yellow Sufficient power from the host computer is available and the
device is operating normally.
Flashing yellow
(slow)
Insufficient power to operate the device. Attach both USB
connectors to the host computer. If both connectors are already
plugged in, and the LED continues to flash, the host computer
does not meet the USB power requirements.
Flashing yellow
(fast)
Power detection has timed out. Unplug all USB connections and
reconnect the them.
No yellow LED No power is detected. Device is off.
Ta b le 1 : LED status for devices
LED status Description
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