What is the expansion slot and what can it be used for?

If you want to find the answers, then you should read this post carefully.

Although some newer computers still have PCI and AGP slots, PCIe has replaced all older technologies.

The expansion slots have so-called data lanes, which are signaling pairs for sending and receiving data.

There are two wires in each pair, so there are four wires in a lane.

Lanes can transmit 8 bits of packets in either direction at the same time.

Whats more, you might know some other important things about expansion slots.