Rear Panel LEDs
No. Component No. Component
1 Power supply LED 6 Battery backup unit status LED
2 Battery backup unit LED 7 Fan status LED
3 Gigabit Ethernet LED (port speed) 8 Status LED
4 Gigabit Ethernet LED (port activity) 9 10 Gigabit Ethernet LED (port activity)
5 High availability LED 10 10 Gigabit Ethernet LED (port speed)
The following LED information applies only when the drive is correctly installed and when the NAS is
connected to the network.
LED Status Description
Power supply
unit
Green • Powered on
• Power supply functioning correctly
Flashing green System off
Orange AC power cord unplugged or abnormal
No color One or more of the following conditions exist:
• AC power unavailable
• Power supply failed
Battery backup
unit
Green Functioning normally
Red Malfunctioning
Orange Charging or learning
No color Not correctly attached to the ES1686dc
Status Green System operating correctly
Flashing green System booting
No color System powered off
ES1686dc User Guide
Product Overview 14
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