Samsung SL-M2875FD-XAA - Manual (Page 181)

Wireless network setup
181 2. Using a Network-Connected Machine
11 If Wireless Settings screen appears, select Using a direct wireless
connection and click Next.
If the screen does not appear, go to step 13.
If below screen appears, press the (WPS) button from the control panel
within 2 minutes.
12 When the wireless network set up is completed, click Next.
13 After the installation is finished, click Close.