You can expand your PC internally by adding additional circuitry boards. Those boards, or expansioncards, plug directly into expansionslots on the motherboard (as shown in this figure). So, you can expand your computer system by adding options not included with the basic PC. Here are the types of expansion slots your PC may have:
PCI Express: The best type of expansion slot to have in your PC is the PCI Express, also written as PCIe. Without boring you, the PCI Express type of expansion slot communicates with the motherboard, and therefore with themicroprocessor, both quickly and efficiently.
PCI: The PCI slot is the most common form of internal expansion for a PC.
Some PCs have a mixture of PCI and PCI Express slots. If so, go with PCI Express when you have that option.
AGP: This type of expansion slot was specifically designed to deal with graphics adapters. In fact, AGP stands for Accelerated Graphics Port. Older PCs may sport this expansion slot, but the bestvideo cards use PCI Express.
ISA: The most ancient type of expansion slot is the ISA, which stands for (get this) IndustryStandard Architecture. That's because it never really had a name until another, better type of expansion slot came along. ISA slots hang around to be compatible with older expansion cards.
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