LED
Status
Description
2.5 Gigabit
Ethernet
activity
Orange
A network connection has been established.
Flashes orange
The device is being accessed from the network.
Off
There is no network connection.
Drive
Flashes red
The data is being accessed and a read/write error occurs
during the process.
Red
• A drive read/write error occurred.
• The drive temperature is over the threshold.
Flashes green
Data is being accessed.
Green
The drive is ready.
Off
No drive was detected.
Expansion
Blue
A QNAP expansion unit is connected.
Off
No USB or SATA external storage devices connected.
Redundant
power supply
Green
The power supply unit is connected to a power source, and
the device is powered on.
Flashes green
The power supply unit is connected to a power source, and
the device is powered off.
Orange
• The power supply unit is disconnected from a power
source, but a parallel power supply unit is connected to
a power source.
• The power supply unit has shut down due to one of the
following:
• The power supply unit failed.
• OCP was activated.
• OVP was activated.
• The fan failed.
Flashes orange
• The temperature is too high.
• The power is too strong.
• The current is too high.
• The fan is too slow.
Orange for a few seconds
and then off
The power supply unit has been disconnected from a power
source, while no parallel power supply unit is connected to a
power source.
Off
All power supply units are disconnected from a power
source.
TS-x73AeU User Guide
Basic Operations
47
