1.1.7 Internal Components of a PC

Component List

• Power Supply
• Central Processing Unit (CPU)
• Heatsink
• Motherboard
• Memory Modules | RAM (Random Access Memory)
• Optical Disk Drive
• Hard Disk Drive (HDD)
• SATA Cable most common of the two
• IDE Cable
• Expansion Cards
  • Graphical Processing Unit (GPU) most common
  • Audio Expansion Cards
  • Networking Expansion Cards

For more info, read the documentation on Hardware.