Definition, synonyms and related words
Initialism of Peripheral Component Interconnect (a type of expansion slot on a motherboard.)
"The technician installed the new graphics card into an empty pci slot to upgrade the computer's performance."
In plain English: PCI is an older computer standard that lets different parts of your machine talk to each other quickly, but it has mostly been replaced by faster technology now.
"The technician installed a new pci card to fix my computer's slow performance."