Chapter 1 Introducing the Zyxel Device
VMG/XMG Series User’s Guide
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Figure 38   XMG3927-B50A Rear Panel
Figure 39   VMG1312-T20B Rear Panel
The following table describes the items on the panels.
Table 16   Panel Ports and Buttons
LABEL DESCRIPTION
WiFi Press the WLAN button for more than one second to enable the wireless function.
WPS Press the WPS button for more than one second to quickly set up a secure wireless connection 
between the device and a WPS-compatible client.
SFP Connect an SFP transceiver to the SFP port for fiber-speed Internet access.
USB The USB port(s) is used for cellular WAN backup, file-sharing, media server, and print server.
DSL Connect a RJ-11 cable to the DSL port for Internet access.
PHONE1 ~ 
PHONE2
Connect analog phones to the phone ports to make phone calls.
LAN1 ~ LAN4 Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN Connect an Ethernet cable to the Ethernet WAN port for Internet access.
Power Connect the power cable and then press the power button to start the device.
Reset Press the button to return the Zyxel Device to the factory defaults.