CompTIA A+ 220-1201 (3.5 - Motherboard Expansion Slots)

A computer bus

• Communication path - A city of technology

• Internal PC growth - Independent pathways

• System expansion - Additional capabilities

PCI

• Peripheral Component Interconnect

- Created in 1994

• Many expansion options

- 32-bit and 64-bit bus width

- Parallel communication

• A common expansion interface on previous

computer generations

- PCI Express is the newer technology

PCI Express

• Also known as PCIe - Replaces the older PCI standard

• Communicates serially - Unidirectional serial "lanes"

- Slower devices don't slow down everyone

• One, two, four, eight, sixteen, or thirty-two full-duplex lanes

- x1, x2, x4, x8, x16, x32

- "x" is pronounced "by" ("by 4," "by 16")

Who is the future IT person?

I’m the future IT person!