Equipment Are required to comply with a protocol so that the interrupt-request (IRQ) strains is often shared. The PCI bus includes four interrupt strains, INTA# by INTD#, all of which can be found to each device. As much as 8 PCI products share the same IRQ line (INTINA# via INTINH#) https://nathanlabsadvisory.com/certified-data-privacy-professional-cdpp/