If at all possible, stand on a concrete floor while working inside the system. Use an antistatic floor mat when working inside the system. If it is necessary to work in a carpeted area, spray the carpet with an antistatic spray and allow it to dry before beginning to work inside the system. Keep components in their antistatic packaging until they are installed. Avoid wearing clothing made of wool or synthetic materials.
Radio frequencies emanating from a system can also interfere with cordless and low-power telephones.
Conversely, RFI from high-power telephones can cause spurious characters to appear on the system's monitor screen. This type of interference can travel from the system to other devices through the power cable and power source or through the air like transmitted radio waves. Each system meets these FCC regulations. Ensure that all expansion slots are covered either by a card-mounting bracket or by a metal filler bracket and that all drive bays have either a drive or a metal insert installed. Ensure that the screws on all peripheral cable connectors are securely fastened to their corresponding connectors on the back of the chassis.