D-Link DSL-G225 User Manual page 134

Section 6 - Connecting To Your Wireless Network
3. Enter the same security key or passphrase (Wi-Fi password) that
is on your router and click Connect.
It may take 20-30 seconds to connect to the wireless network. If the
connection fails, please verify that the security settings are correct.
The key or passphrase must be exactly the same as on the wireless
router.
D-Link DSL-G225 Wireless N300 ADSL2+/VDSL2 Modem Router User Manual 129