Dell 5210n Mono Laser Printer - Manual (Page 150)

It is important to ensure that you only use your radio device in countries where the device is approved for use. To determine whether you are allowed to use
your wireless network device in a specific country, please check to see if the radio type number that is printed on the identification label of your device is listed
on the radio approval list posted on the general Dell support site at
http://support.dell.com .
In countries other than the United States and Japan, verify that the Location set-ting from the Regional Options tab in Regional and Language Options (from
Control Panel) has been set to the country in which you are using your Dell 5210 / 5310 Wireless Option. This ensures compliance with local regulatory
restrictions on trans-mit power and optimizes network performance.