... connectorFigure 9-7 Miniature auxiliary power connectorFigure 9-8 7. With all this information in hand, visit a full-service computer retailer or online store. A competent salesper-son or support ... from 2GB to 4GB improves performance, but not as much as the first step up does.In this chapter, I show you the basics on installing memory. For much more informa-tion, check out my book Fix ... types of memory modules for modern PCs. How about the speed difference between, say, PC 2-5 200 and PC 2-5 300? Same thing applies. If your system is designed to use DDR PC 2-5 200 memory, that’s what...