TP-Link M5250 User Manual page 33

WPA-PSK/WPA2-PSK: It's the WPA/WPA2 authentication type based on pre-shared

pass phrase. It's easy to set and secure to use. So it's perfect for SOHO users.
WPA Key: The default WPA key is the last 8 characters of IMEI. You can keep it
default or enter 8~63 ASCII characters or 8~64 hexadecimal characters as your new
WPA key.
 WiFi Auto-disable Time: If no clients connect to the device's wireless network in a period
of time (15 minutes by default), the Wi-Fi will be shut down. You can press the power
button to resume the Wi-Fi.
Click Save to save your settings.
4.4.3.2. MAC Filter
The Wireless MAC Address Filtering feature allows you to control the wireless stations
accessing the device, which depends on the station's MAC addresses. MAC Address is the
physical address of the wireless stations, usually in the format of XX-XX-XX-XX-XX-XX format
(X is any hexadecimal digit).

Wireless MAC Address Filter: Select to Enable or Disable the MAC filter function of the
device. The below settings will take effect only when you select Enable.

MAC Address List: A List of MAC addresses will be allowed to access the device.

Your MAC Address: Displays the MAC address of your client(s) currently wirelessly
connected to the device.
Click Save to save your settings.
Figure 4-22 Wireless MAC Filter
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M5250 3G Mobile Wi-Fi User Guide