Q: Different model numbers

Good evening Sir!   I have a confusion with model number....

Model no. On my iPad mini is A 1455 and the model number on charger(adaptor) is A1400.. Is model no. May differ?

Sir ,I don't know I have iPad 2 or ipad 3...please clear me. .My iPad mini has iOS 6.0.1 and its model no. Is A1455 made in China...

Thanks...