brief introduction: PCI stands for Peripheral Component Interconnect(Standard for Peripheral Component Interconnect), and is the most widely used interface in personal computers today, with slots available on almost all motherboards.PCI slot is also the motherboard with the largest number of slot type, in the current popular desktop motherboard, ATX structure of the motherboard generally with 5 ~ 6 PCI slots, and a little bit of MATX motherboard also have 2 ~ 3 PCI slots, it can be seen that the universality of its