Hard drive led states and description – Dell 1TB Portable External Hard Drive USB 3.0 User Manual

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Hard Drive LED States and Description

LED States

Hard drive activity state

Hard drive LED status

OFF

Hard drive is turned OFF

Hard drive idle

LED glowing at maximum brightness

Hard drive reading/writing data

LED blinking slowly (every 3 seconds)

Hard drive on standby

LED glowing, but with reduced

brightness

Hard drive on hibernate

LED is OFF

Hard drive busy

LED blinking rapidly

Only the hard drive adapter is connected LED glowing, but with reduced

brightness

Troubleshooting