Blue lights turn off

Well I know this annoying thing too well.On the top of the device is what could best be described as a blue police light. As soon as power is applied to the DG834PN, this light begins flashing in a rotating motion. Fortunately you can turn this feature off before it becomes too annoying or causes a migraine. You will need to access the product's configuration option, select the maintenance section and alter the settings that come under Dome LED Control. The flashing light can be set to on, off or as per schedule.
This should resolve your issue.