Black Box NL600 User Manual page 11

3.1.3 Shutdown and Local IP
Shutdown click this button, device will shutdown, restart and
locked.
After clicking this button , the indicating light will turn red ,the device goes into
electricity-saving state. To wake up the device , you only need to push the
standby or restart key .
When you click the "Lock" key ,the interface will stay in a locked state ,the
"Lock" icon shifts into "Unlock " ,click it one more time will unlock the
interface .