TP-Link TL-MR3040 - Page 237

TL-MR3040 Portable 3G/3.75G Battery Powered Wireless N Router
z Group Key Update Period - Specify the group key update interval in seconds. The
value can be either 0 or at least 30. Enter 0 to disable the update.
¾ Use the Previous settings - If you chose this option, wireless security configuration will
not change.
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