iPad model

Version number

Other clues

 iPad 1

A1219 (Wi-Fi version)

A1337 (Wi-Fi + cellular version)

Old 30-pin port at the bottom; no camera apertures

iPad 2

A1395 (Wi-Fi version)

A1397 or A1396 (Wi-Fi + cellular versions)

Old 30-pin port

 iPad 3rd Generation (iPad 3)

A1416 (Wi-Fi version)

A1430 or A1403 (Wi-Fi + cellular versions)

Old 30-pin port

 iPad 4th Generation (iPad 4)

A1458 (Wi-Fi version)

A1459 or A1460 (Wi-Fi + cellular versions)

Lightning port at the bottom

 iPad Air

A1474 (Wi-Fi version)

A1475 (Wi-Fi + cellular version)

Lightning port

 iPad Mini 1

A1432 (Wi-Fi version)

A1454 or A1455 (Wi-Fi + cellular versions)

Lightning port; iPad minis are smaller –about the size of a paperback

 iPad Mini 2 (iPad Mini with Retina Display)

A1489 (Wi-Fi version)

A1490 (Wi-Fi + cellular version)

Lightning port