The following points summarize the key concepts in this chapter:
- The key to specifying the proper size of a power supply for a computer is to add together the power requirements for all the components. It is important to be sure to add extra power to allow for boot up.
- Electrical power is measured in watts.
- Proper installation of the P8 and P9 connectors is important to prevent damage to the motherboard. The black (ground) wires must be installed side by side.
- Molex and mini connectors are used to connect power to devices such as floppy disk and hard disk drives.
- The flow of power into a computer must be managed in order to prevent damage and/or loss of data.
- Surge suppressors will eliminate some higher-than-normal voltage problems.
- High-quality UPS devices will eliminate most power fluctuations caused by too much or too little voltage.
- Check power supplies when there are unusual problems with memory and PC operations that do not quickly point to another cause.