A+ A Guide to Hardware. Week 3 Form Factors and Power Supplies. Objectives. Learn about different form factors and computer cases. Learn how electricity is measured Learn how to protect your computer system against damaging changes in electrical power Learn about Energy Star specifications
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Form Factors and Power Supplies
A+ Guide to Hardware, Sixth Edition
The CPU on an ATX motherboard sits opposite the expansion slots and does not block the room needed for long expansion cards
Improved airflow in a BTX case and motherboard makes it unnecessary to have a fan on top of the processor
A+ Guide to Managing and Maintaining your PC, 6e
A transformer keeps power constant but changes the ratio of current to voltage
Normally, electricity flows from hot to neutral to make a closed circuit in the controlled environment of an electrical device such as a lamp
Use a receptacle tester to verify that hot, neutral, and ground are wired correctly
Capacitors on a motherboard or other circuit board often have embedded crossed lines on top
This surge suppressor has six electrical outlets, two phone jacks, and a power protection light. Protected by a 10 cent device called a Varistor.
Figure 4-24 A power management BIOS setup screen showing power-management features
For an ATX or BTX power supply, the remote switch wire must be connected to the motherboard before power will come on
Install one exhaust fan on the rear of the case to help pull air through the case