
MY BOOK DUO
USER MANUAL
ABOUT YOUR WD STORAGE DEVICE – 5
As shown in Figure 3, the My Book Duo device has the power connector, reset button,
interface port, two USB 3.0 hub connectors, and a security slot on the back.
Device Power/Activity LED
The device power/activity LED shows the condition of the device as follows:
Drive Status LEDs
The drive status LEDs show the drive status as follows:
Figure 3. Back of the My Book Duo Device
LED Appearance Device Condition
Black (off) Powered down or not connected to a computer
White, steady Powered up, connected, and idle
White, blinking slowly Standby—initiated by the device sleep timer setting
White, blinking rapidly Read or write activity or rebuilding a RAID 1 array
Red, blinking slowly RAID fault status condition
Red, blinking rapidly Overheated
LED Appearance Drive Status
Black (off) Normal, no fault
Red, steady Drive has a RAID fault condition or is rebuilding
Kensington
®
Security Slot
USB 3.0
3-amp Power Connector
USB Hub Connectors
Reset Button Access Hole
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