Dell OptiPlex NX1 User's Guide - Page 18

Use the following tools and accessories for cleaning the computer and the monitor: Liquid dishwashing detergent Use a mixture of one part liquid dishwashing detergent and three parts water to clean the exterior of the computer, monitor, and keyboard. You can also add fabric softener to produce an antistatic solution that prevents dust from being attracted to the monitor screen. Soft, lint-free cleaning cloth Moisten the cleaning cloth with the dishwashing detergent solution to clean the exterior of the computer system. Small vacuum cleaner with a brush attachment Use the vacuum cleaner to remove dust and dirt from the exterior of the computer and keyboard. Do not soak the cloth in the solution; you must not let the solution drip inside the computer or the keyboard. If you get moisture into any of the computer components, contact your network administrator immediately. This section discusses various environmental factors that can adversely affect system performance and longevity. Temperature extremes can cause a variety of problems, including premature aging and failure of chips and mechanical failure of devices. Extreme temperature fluctuations can cause chips to become loose in their sockets and can cause expansion and contraction of disk drive platters, resulting in read or write data errors. There are several guidelines you can follow to minimize the negative effects of temperature on system performance. 2-2 Dell OptiPlex NX1 Net PC Systems User's Guide