PC Hardware Basics

Labelled ATX Motherboard (The ECS K7S5A)

Motherboard: Internal

• 1 ATX power connector
• 2 CPU (Central Processing Unit) socket
• 3 DIMM (Double Inline Memory Module) slots
• 4 Chipset (with heatsink)
• 5 Floppy disk connector
• 6 IDE hard disk connector
• 7 BIOS (Basic Input Output System) chip
• 8 PCI (Peripheral Component Interconnect) expansion slots
• 9 AGP (Accelerated Graphics Port)
• 10 AMR (Audio/Modem Riser)

Motherboard: External

• 11 Sound card connectors
• 12 Game port
• 13 COM (communications) port
• 14 Parallel port
• 15 COM (communications) port
• 16 USB (Universal Serial Bus) ports
• 17 PS/2 connectors