Is this miner an s9 or s9i

I bought a used antminer that was sold as an s9i but when it arrived the two labels on it said it was an s9, after asking the seller this is what they said:

The rig you were sent was S9 i 14 TH/s. S9i 14TH/s has a label of S9 only. S9j and S9k are the ones labelled with ‘J' or 'k'

As far as I can see the s9i should be labelled as an s9i, who is correct?