Asus PSCH-SR/SCSI - Manual (Page 79)

ASUS PSCH-SR motherboard 4-23
e. Setting to [Disabled] disables the onboard SATA controller. The RAID
feature is also disabled.
SATA Mode [IDE]
When set to [RAID], this item allows configuration of the installed IDE
devices into a disk array. Refer to the software installation guide for
details on RAID configuration. Configuration options: [IDE] [RAID]
Serial ATA Port0 Mode [SATA0 Master]
Serial ATA Port1 Mode [SATA1 Master]
Allow you to set the SATA Port0 and Serial ATA Port1 modes. The options
for these items vary depending on the setting of the On-Chip Serial ATA
item. Configuration options: [Primary Master] [Secondary Master]
[SATA0 master] SATA1 master]