D-Link COVR-1900 User Manual page 118

Section 5 - Quick VPN
Click Advanced settings. Enter your Passkey in the Key text box under Use
preshared key for authentication. Click OK to close Advanced Properties
and click OK to close Quick VPN Connection Properties.
Your Windows 7 system is now configured to connect to your Quick VPN
server.
D-Link COVR-1900 User Manual 114