use this link to find out which drive chipset your wii has.
Wii Drive Chip Database
If it is one of the newest ones and I am inclined to believe it is. You may not be able to play backups ie. DVD-r's on it drivekey or no drivekey. USB hard drive will what you will have to use.
Check the link and tell us the results. all you need to do is type in your consoles serial number in the space near the top.