The LED on my Passport [WDBKXH5000A] flashes continuously, every second. Timed it with my watch.
From the User Manual I know that fast flashing (approx. 3x per second) means the drive is reading or writing; and slow flashing (approx. every 2.5 seconds) means the drive is in standby. The behavior I am seeing is neither of those. The LED flashes every second, continuously, 24x7 unless the drive is reading or writing.
What is the meaning of this?
[The Passport is plugged in to a USB 3.0 port of a laptop running Windows 8. The laptop is on AC power at all times the the Passport is connected.]