•Shielded signal cables: Using shielded cables ensures that you maintain the appropriate EMC classification for the intended environment. For parallel printers, a cable is available from Dell. If you prefer, you can order a cable from Dell on the World Wide Web at http://www.dell.com.
•Protecting against electrostatic discharge: Static electricity can harm electronic components inside your computer. To prevent static damage, discharge static electricity from your body before you touch any of your computer’s electronic components, such as a memory module. You can do so by touching an unpainted metal surface on the computer’s I/O panel.
•Electromagnetic interference (EMI) is any signal or emission, radiated in free space or conducted along power or signal leads, that endangers the functioning of a radio navigation or other safety service or seriously degrades, obstructs, or repeatedly interrupts a licensed radio communications service. Your Dell com- puter is designed to comply with applicable regulations regarding EMI. Changes or modifications not expressly approved by Dell could void your authority to oper- ate the equipment. Additional regulatory information regarding your computer can be found in your online User’s Guide.