D-Link AX1500 Product Overview page 144

Section 6 - Connect a Wireless Client to your Router
The following window appears while your computer tries to connect to the
router.
Enter the same security key or passphrase (Wi-Fi password) that is on your
router and click OK. You can also connect by pushing the WPS button on the
router.
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 the one on the wireless router.
D-Link R15 User Manual 139