Hard reset D-Link DGL-4500

Factory reset (Hard reset)Power ON the router. Locate the reset pin hole on the back (next to the USB port). Press it with a thin object (paperclip) and hold down for 5-10 seconds. Release and wait for 30-60 seconds for the reboot process to finish.
FirmwareFirmware link
Default usernameadmin
Default password[leave blank]
Default IP address192.168.0.1