D-Link WUA-1340 User Manual page 40

Section 5 - Troubleshooting
click on Configuration to change the settings for the wireless adapter.
If Security is enabled, make sure that the correct encryption keys are entered on both the WUA-1340 and the access point. Double-
click on the WLAN icon in the taskbar > click Encryption. Check to see that the key selected is set to the same key as other devices
on the network.
D-Link WUA-1340 User Manual 40