IEI Integration ROCKY-3786 v4.0 - Manual (Page 119)

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ROCKY-3786EV CPU Card
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BIOS Menu 7: PnP/PCI Configurations
PNP OS Installed [No]
The PNP OS Installed option determines whether the Plug and Play devices connected to
the system are configured by the operating system or the BIOS.
No (Default) If the operating system does not meet the Plug and Play
specifications, BIOS configures all the devices in the system.
Yes Set this option if the system is running Plug and Play aware
operating systems. The operating system changes the
interrupt, I/O, and DMA settings.
Reset Configuration Data [Disabled]
Use the Reset Configuration Data option to reset the Extended System Configuration
Data (ESCD) when exiting setup if booting problems occur after a new add-on is installed.