Asus P4T-EM User Manual page 60

4. BIOS SETUP
PCI 2.1 Support [Enabled]
This function allows you to enable or disable PCI 2.1 features including
passive release and delayed transaction. Configuration options: [Disabled]
[Enabled]
Onboard PCI IDE Enable [Both]
You can select to enable the primary IDE channel, secondary IDE channel,
both, or disable both channels. Configuration options: [Both] [Primary]
[Secondary] [Disabled]
60 ASUS P4T-EM User's Manual