LED
Status
Description
LAN
Orange
The network connection is operating at 1 Gbps.
Flashes orange
The device is being accessed from the network.
Off
The device is not connected to a network.
1 Gigabit
Ethernet
speed
Green
The network connection is operating at 1 Gbps.
Orange
The network connection is operating at 100 Mbps.
Off
• The network connection is operating at 10 Mbps.
• There is no network connection.
1 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.
USB
Blue
A USB device connected to the USB One Touch Copy port is
detected.
Off
No USB expansion unit has been detected.
Audio Alert
Duration
Frequency
Description
Short beep (0.5 seconds)
1
• The NAS is starting up.
• When the reset button is
pressed for 3 seconds, the
NAS resets configurations.
• When the reset button is
pressed for 10 seconds, the
NAS resets configurations and
reboots.
• The operating system was
updated.
• The device is starting USB
One-Touch Copy.
2
The USB device has been
removed (USB One Touch copy
button).
3
• Cannot detect installed disk.
• The NAS data cannot be
copied to the external storage
device connected to the front
USB port.
TS-451D2 User Guide
Basic Operations
32