Cooling and Power Objective 3.4 and 3.5

Question 1

Power Supply Unit (PSU)

Answer 1

The main purpose of power supply is to deliver DC to all components inside the PC when receiving an AC power supply

Question 1

Modular PSU / Modular Power Supply Unit

Answer 1

▪ Allows to unhook the connectors and detach from the unit
▪ Modular power supply frees up space inside of the computer

Question 2

Power Supply Connectors

Answer 2

Main Board / Motherboard Adapter
▪ Provides power to the motherboard

● ATX Standard
- 20-pin connector
● ATX 12V
- 24-pin connector
● 20+4 Pin
-Two connectors are coupled together before plugging into
a 24-pin connector

Question 3

Input and Output Voltages USA and Europe

Answer 3

120V AC (Low Line Power) ▪ US-based power supply

230V AC (High Line Power) ▪ Europe and Asia power supply