The model should be: DP75SDI
The model should be: DP75SDI Not DP755DI
300 ppi is DP75SDI. I think you didnt see the S clearly but since im still young I can lol.
gleeglee217 great eyes. Take a look, it's fixed. Thanks for finding this. right now it looks as if this is even the wrong model. DP75SDI should be a 2nd gen Paperwhite.