Products are necessary to abide by a protocol so the interrupt-ask for (IRQ) traces may be shared. The PCI bus includes four interrupt traces, INTA# via INTD#, all of which can be obtained to every gadget. Nearly eight PCI products share exactly the same IRQ line (INTINA# by INTINH#) in https://nathanlabsadvisory.com/iso-27701-privacy-information-management-system-pims/