How to tell version of Shunyata Hydra 8

Can someone please tell me how to identify which version a Shunyata Hydra 8 is? From my understanding there are two versions. Does the manufacture date identify this?

serial # is the typical method; then call factory to ask

There is a silver ID tag on the back of all version 2 units that clearly states their iteration. Next best thing is the serial number which will also state v2 or you can call or e-mail in serial id numbers and get an exact report of date of manufacture etc...

Shunyata Research