Serial General Purpose Input/Output Connectors (6-1 Pin Sgpio1, 8-1 Pin Psgpio 1/2 And Isgpio1) - Asus RS920-E7/RS8 User Manual

7. Serial General Purpose Input/Output connectors
(6-1 pin SGPIO1, 8-1 pin PSGPIO 1/2 and ISGPIO1)
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 1/2 connectors are used for PIKE card.
The ISGPIO 1 connector is for SATA connectors—ISAS connectors.
4-12 Chapter 4: Motherboard information