D-Link DSL-2750U User Manual page 149

DSL-2750U Wireless N ADSL2+ USB Modem Router
User Manual
Figure 107. The 3G modem / PIN page. The Changing PIN code tab.
Enter the current code in the PIN code field, then enter a new code in New PIN code and New
PIN code confirmation fields and click the Apply button.
If upon one of the operations described above you have entered an incorrect value in the PIN code
field three times (the number of remaining attempts is displayed in the Attempts left field), the
identification card inserted into your USB modem is blocked.
For further use of the card, enter the PUK code in the relevant field, and then specify a new PIN
code for your SIM card in the New PIN code field. Click the Enter button.
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Configuring via Web-based Interface