Received 16P9SV instead of 16P9S. Should send it back?

A few minutes ago I received a 16P9SV, instead of a 16P9S that I ordered.

Has it any disadvantages compared to 16P9S?
I remember that Lite-On had some legal problems with Zoran and released it as a moddified version of 16P9S, which makes me afraid that it might be a crippled version of 16P9S.

So, should I return it tomorrow?
I want a drive that can read as fast as a patched 16P9S and perform disc quality scans.