HP ROM-Based Setup Utility - Manual (Page 168)

PCI Devices menu
The PCI Devices menu displays the configuration settings of the PCI devices installed in the server
and allows you to modify the IRQ. Multiple PCI devices can share an interrupt.
To disable a device, select the device and press the Enter key. A menu is displayed with options
to change the IRQ and disable the device.
NOTE: Only IRQs that are modified in RBSU retain the change during the next reboot. IRQs on
PCI devices that have not been modified are subject to change during reboot.
168 RBSU menu-driven interface, version 2.xx (G5 and earlier servers)