1. Motherboards
Common Components

2. External Connections P/S2 Connector Parallel Port (Mouse)
P/S2 Connector Serial Ports
(Keyboard

3. External Connections RJ45 Connector Games Port USB Port Connectors for
built in sound chip

4. External Connections 9 Pin serial 4 Pin IEEE 1394 port
Connector (firewire)
Universal Serial Bus (USB) Connectors
Six pin IEEE 1394 Connector

5. CPU Sockets
Zero Insertion Force (ZIF)
Socket

6. RAM Slots
RAM Slots

7. IDE Connectors Missing Pin Integrated Device Electronics

8. Serial ATA (SATA) Connector

9. IDE and SATA Connectors

10. Floppy Dive Connector
Missing Pin
Floppy Drive connector

11. Power Connectors Auxiliary Power Connector ATX Power (found on some
P4 Motherboards)
ATX Power
Connector

12. Power Connectors
ATX 12V Power
Connector

13. AT Power connectors

14. Expansion Ports
AGP Slot
PCI Slot
Mini PCI Slot
(AMR or CNR)

15. Mini PCI
expansion
card
PCI expansion
card

16. Heatsink and fan

17. Basic Input Output
System (BIOS) chip

18. CMOS
Battery
DIP switch

19. Analogue Monitor Connections
15 Pins in three rows

20. Digital Monitor connections
DVD-D
DVD-I