ECS L7VTA3 Manual page 29

L7VTA3 V3.1a
RAIDLED1: IDE3/IDE4 array controller active LED
This connector is used to show this activity of the IDE3/IDE4 HDD. The IDE
LED is located on pins 1-2 of RAIDLED. You can attach the hard drive LED
cable to pins 1 -2.
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