Brother MFC-5895CW - Manual (Page 66)

Wireless configuration for Windows ® using the Brother installer application (Not available for MFC-5490CN and MFC-5890CN)
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You need to temporarily change your computer's wireless settings. Follow the on-screen instructions.
Make sure to take note of all the settings such as the SSID or channel of your computer (you will need
them to return your computer back to its original wireless settings), and then click Next.
If you want to configure your machine for the wireless network you have been using, write down your
wireless network settings before configuration.
For example:
Network name:(SSID, ESSID)
Communication Mode Authentication method Encryption mode Network key
Ad-hoc Open system WEP
NONE
—
Network name:(SSID, ESSID)
HELLO
Communication Mode Authentication method Encryption mode Network key
Ad-hoc Open system WEP 12345