Dell Precision 420 System Information Guide - Page 17
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EN 55022 Compliance (Czech Republic Only) This device belongs to Class B devices as described in EN 55022, unless it is specifically stated that it is a Class A device on the specification label. The following applies to devices in Class A of EN 55022 (radius of protection up to 30 meters). The user of the device is obliged to take all steps necessary to remove sources of interference to telecommunication or other devices. - VCCI Notice (Japan Only) Most Dell computer systems are classified by the Voluntary Control Council for Interference (VCCI) as Class B information technology equipment (ITE). However, the inclusion of certain options can change the rating of some configurations to Class A. ITE, including peripherals, expansion cards, printers, input/output (I/O) devices, monitors, and so on, integrated into or connected to the system, should match the electromagnetic environment classification (Class A or B) of the computer system. To determine which classification applies to your computer system, examine the regulatory labels/markings (see Figures 2-1 and 2-2) located on the bottom or back panel of your computer. Once you have determined your system's VCCI classification, read the appropriate VCCI notice. Class A ITE This is a Class A product based on the standard of the Voluntary Control Council for Interference (VCCI) for information technology equipment. If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the user may be required to take corrective actions. VCCI-A Figure 2-1. VCCI Class A ITE Regulatory Mark support.dell.com Dell Precision WorkStations Safety and Regulatory Information 2-7