User Guide
Page 52
... the sub-menu and the following screen appears: On-Chip ATA(s) Operate Mode This setting allows you to determine how the RAID controller on the motherboard you buy. Setting options: [Disabled], [Enabled]. Setting options: [Disabled], [Enabled]. Set to [Disabled] only if you may use the traditional 14 and 15 IRQs, while... device other than the USB mouse. USB Controller This setting is going to switch to SATA controller. [Legacy Mode] means you may use any USB 1.1/2.0 driver installed, such as DOS and SCO Unix.
... the sub-menu and the following screen appears: On-Chip ATA(s) Operate Mode This setting allows you to determine how the RAID controller on the motherboard you buy. Setting options: [Disabled], [Enabled]. Setting options: [Disabled], [Enabled]. Set to [Disabled] only if you may use the traditional 14 and 15 IRQs, while... device other than the USB mouse. USB Controller This setting is going to switch to SATA controller. [Legacy Mode] means you may use any USB 1.1/2.0 driver installed, such as DOS and SCO Unix.