The Components of the System Unit

1. Memory

1.1. Nonvolatile memory

1.1.1. ROM

1.1.2. flash memory

1.1.3. CMOS

1.2. Volatile memory

1.2.1. RAM

2. Buses

2.1. PCI bus

2.2. PCI Express bu

2.3. Accelerated Graphics Port

2.4. USB and FireWire bus

2.5. PC Card bus

3. Power Supply

3.1. AC adapter

3.2. power supply

4. Processor

4.1. Multi‐core processor

4.2. Dual‐core processor

4.3. Quad‐core processor

5. Ports and Connectors

5.1. USB port

5.2. Firewire port

5.3. Bluetooth port

5.4. SCSI port

5.5. eSATA port

5.6. IrDA port

5.7. Serial port

5.8. MIDI port

6. Bays

6.1. drive bay