What Is the Difference Between PCI and ISA Slots?

PCI slots are the most common type of computer expansion slot. They are used to connect devices such as sound cards, modems, and network cards to the motherboard.

ISA slots are older and less common than PCI slots. They are used to connect legacy devices such as floppy disk controllers and serial port cards to the motherboard.

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The main difference between PCI and ISA slots is their size. PCI slots are much smaller than ISA slots.

This means that PCI cards can be inserted into any available PCI slot, but ISA cards can only be inserted into ISA slots that are the same size as the card. Another difference between PCI and ISA slots is that PCI slots can transfer data at a much higher rate than ISA slots.