Enabling or disabling PCIe Device Isolation Support Use the PCIe Slot to Processor Mapping option to configure PCIe Isolation Support. Procedure From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > PCIe Device Configuration Options > PCIe Device Isolation Support. Select a setting. Enable—When enabled, a PCIe device will be disabled at runtime when an error is detected. Disable—When disabled, a PCIe device will be enabled at runtime when an error is detected. Consult Operating System documentation before enabling this option. Save your setting.