Asus RS700-X7/PS4 - Manual (Page 36)

Chapter 2: Hardware setup 2-18
2.7 SATA/SAS backplane cabling
* For PIKE RAID solution, ensure to connect SAS_SGPIO_CON1 to support PIKE card SAS RAID
function.
Connect the SATAII/SAS HDDs Connects the data cables
connected to the motherboard
SGPIO_SEL jumper:
pins 1-2 (Onboard)
pins 2-3 (Add-on card)
SAS_SGPIO_CON1 connector*
Connects a 8-pin
plug from power
supply