Asus KFSN4-DRE SAS User Manual page 49

10. SAS connectors (KFSN4-DRE/SAS model only)
This motherboard comes with four Serial Attached SCSI (SAS) connectors,
the next-generation storage technology that supports both Series SCSI and
Serial ATA (SATA). Each connector supports one device.
KFSN4-DRE Series SAS connectors
To connect the SAS cable:
Plug in the SAS cable to the SAS1-4 connector until the cable snaps in place.
ASUS KFSN4-DRE Series
SAS1 SAS2 SAS3 SAS4
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