Planet WGSW-28040 User Manual page 319

4. If that device works, refer to the next step.
5. If that device does not work, check the AC power

While IP Address be changed or forgotten admin password –
To reset the IP address to the default IP Address "192.168.0.100" or reset the password to default value. Press the hardware
reset button at the front panel about 10 seconds. After the device is rebooted, you can login the management WEB interface
within the same subnet of 192.168.0.xx.
Reset
User's Manual of WGSW-28040 / 28040P / 28040P4
319