Brother HL 3070CW - Manual (Page 112)

Wireless configuration using the PIN Method of Wi-Fi Protected Setup (For HL-3070CW)
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7
g
Choose Standard Installation, and then click Next.
h Choose Search the network for devices and choose from a list of discovered devices
(Recommended). Or enter your printer's IP address or its node name. Click Next.
Note
You can find your printer’s IP address and the node name by printing out the Network Configuration page.
See Printing the Network Configuration page on page 123.