Seagate ST31230N/ND Computer Drive User Manual


 
Hawk 2LP Family Installation Guide, Rev. B 29
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LED These pins used to connect a cable for a
remote LED indicator. Pin 3 (top, nearest HDA),
the anode connection, connects in the drive to
the +5V supply through a pull-up resistor. Pin 4
(bottom), the cathode connection connects in
the drive to signal common through the emitter-
collector junction of a transistor switch that
controls the LED on/off condition.