ADLINK NuPRO-A331 - Manual (Page 64)

50 BIOS Setup
5.3.2 IDE Configuration
Configure SATA as
Options: IDE, RAID, AHCI, Disabled
SATA#1 IDE Configuration
When running in Compatible mode, SATA channels 1, 2, 3 and
4 can be configured as legacy IDE channels.
SATA#2 IDE Configuration
When running at compatible mode, SATA channels 5 and 6 can
be configured as legacy IDE channels.
IDE Master/Slave
Select one of the hard disk drives to configure it. Press
< Enter > to access its submenu.