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Chapter 2: Hardware information
8. Serial General Purpose Input/Output connector (6-1 pin SGPIO1)
The SGPIO 1 connectors are used for the Intel Rapid Storage Technology Enterprise
SGPIO interface that controls the LED pattern generation, device information, and
general purpose data.
The PSGPIO 1 and PSGPIO 2 connectors only functions when you install an ASUS
PIKE RAID card.