How do I install a wireless internet box Tenda W150M+ in my MacBookAir without a CD disk intake?

I bought a MacBookAir Super Drive to install the disk that came w the Tenda wireless. DO I need to use the disk in order to download the software to operate the Tenda? Do I need to download anything at all? I have tried the Tenda device in China and didn't work. What to do? Tks. Jorge