Longshine GFT150 Ver.2.0 - Manual (Page 20)

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This Connector connects to the hard drive activity LED on control panel.
This LED will flash when the HDD is being assessed.
ATX Power ON/OFF Button
This 2-pin connector acts as the “Power Supply On/Off Switch” on the SBC
card. When pressed, the switch will force the SBC card to power on. When
pressed again, it will force the SBC card to power off.
LINK_ACT_LED
SPEED_LED