Every card expected an open slot to the motherboard along with a detachable panel over the back with the system unit. Including PCI cards was an uncomplicated method to update a pc because you could increase a greater video clip card, speedier wired or wi-fi networking, or include new ports, https://nathanlabsadvisory.com/ensuring-secure-payment-processing-with-pci-dss-compliance-certification-in-the-usa/