LED
Status
Description
10 Gigabit LAN
(Rear)
Left Green
The Ethernet port is connected to a 10 gigabit network.
Left off
The Ethernet port is not connected to a 10 gigabit network.
Right Amber
The Ethernet port is connected to a network.
Right flashes Amber
Data is being transmitted on this Ethernet port.
Right off
The Ethernet port is not connected to a network.
Drive
Green
The drive is ready.
Flashes Green
The drive is being accessed.
Red
The drive has encountered an error.
Flashes Red 5 times per
second
The drive is being located in the operating system.
Off
No drive is detected.
Audio Alert
Duration
Frequency
Description
Short beep (0.5 seconds) 1
• The NAS is starting up.
• The NAS is shutting down (software shutdown).
• The user pressed the Reset button.
• The operating system was updated.
3
The user tried to copy the NAS data to the external
storage device from the front USB port, but the data
cannot be copied.
Long beep (1.5 seconds) 3 (every 5 minutes)
The system fan is not functioning.
2
• The disk volume is about to reach its full
capacity.
• The disk volume has reached its full capacity.
• The drives are in degraded mode.
• The user started the drive rebuilding process.
• A drive is plugged in or out.
1
• The NAS was powered off by force shutdown
(hardware shutdown).
• The NAS was powered on successfully and is
ready.
TS-431XeU User Guide
Basic Operations
27
