Vantec NST-400MX-S3R User Guide - Page 11

6.LED Indicator: Dual 3.5" RAID Enclosure w/Fan USB 3.0 & eSATA Interface General Operation: Power LED HDD 1 LED HDD 2 LED Green Blue Blue ON : Power on OFF: Power off ON : HDD inserted Flash Randomly: Accessing (Read/Write/Rebuild) Flash Consistently (3 flashes per second): HDD error OFF: HDD not installed/Removed/sleep mode ON : HDD inserted Flash Randomly: Accessing (Read/Write/Rebuild) Flash Consistently (3 flashes per second): HDD error OFF: HDD not installed/Removed/sleep mode RAID Rebuild LED Activity Chart: this chart describe LED activity under RAID rebuild process Constant On Blinks Randomly Online: USB (or eSATA) is connected to PC. Offline: USB (or eSATA) doesn't connect to PC. Operations HDD1 LED In progress Online Complete HDD2 LED Power LED In progress Offline Complete FAN ON ON ON OFF NOTE: 1. RAID Rebuild Mode: RAID1 2. Rebuild speed around 250GB/HR 3. LED blinking consistently (3 flashes per second) indicates HDD failure LED Indicator 9