ERB9250. 300Mbps Wireless N. Range Extender. User Manual. Version: 1.0 ERB9250 default IP address is 192.168.1.2, please ensure it is not occupied by. ERB9250. There are two ways to setup ERB9250. They are Smart Wizard Setup, your Operation System and follow the appropriate instructions below to.Quick Install Guide. 1. Thank you for choosing EnGenius. One CD-ROM with user manual used to configure the Range Extender before setting up ERB9250. EnGenius ERB9250 Login Steps: launch your browser and goto IP Address 192.168.1.2, type in the default username EnGenius ERB9250 router setup & security.