GIGABYTE AirCruiser GN-BR30N-RH - Manual (Page 71)

GN-BR30N-RH 2.4GHz AirCruiser N300 Wireless Router
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The default gateway represents the IP address of your GN-BR30N-RH, that is:
192.168.1.254. All computers accessing this Router MUST be in the same
subnet (192.168.1.x, where x is anything between 1 and 253)
In the above example, the BR30N-RH gateway shown above is
192.168.1.254, and the PC’s IP address is 192.168.1.2
Check to see if your web browser is automatically detecting LAN settings
Step 1
Open Internet Explorer. From the menu select Tools and then
click Internet Options.