Edimax Technology BR-6424n - Manual (Page 48)

3-1 System
You can setup basic system settings of this broadband router in ‘System’
menu:
Please select the setting item you wish to set, then click ‘Apply’ button to
proceed. You can also click ‘Previous’ button to back to ‘System’ menu.
3-1-1 Time Zone
You can change the time zone settings of this broadband router. It’s
important to have correct date and time setting if you need to read system
log and use build-in firewall functions.