DSL-2750U Wireless ADSL2+ Router with 3G/LTE/Ethernet WAN Support
and USB Port
User Manual
Configuring via Web-based Interface
USB Modem
This menu is designed to operate USB modems.
If the PIN code check for the SIM card inserted into your USB modem is not disabled, the relevant
notification will be displayed in the top right corner of the page.
Figure 118. The notification on the PIN code check.
Click the ENTER button. When the USB Modem / PIN page opens, enter the PIN code in the
Authorization section
13
. Click the Show icon ( ) to display the entered code. Then click the
APPLY button.
Figure 119. Entering the PIN code.
Some USB modems in the router mode and Android smartphones in the modem mode have an IP
address from the subnet which coincides with the router's local subnet. In this case, the router's
web-based interface can be unavailable. For correct operation, disconnect the device from the USB
port and reboot the router. Then access the web-based interface, go to the Connections Setup /
LAN page, and change the value of the IP address field on the IPv4 tab (for example, specify the
value 192.168.2.1). Wait until the router is rebooted.
13 For some models of USB modems it is required to disable the PIN code check on the SIM card prior to connecting
the USB modem to the router.
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