Which iPad model does NOT support Shared iPad?

The iPad model that does not support Shared iPad is the iPad Air 1. Shared iPad is a feature that allows multiple users to share an iPad, enabling personalized experiences with separate app data and settings for each user. This feature is designed to work on devices with the capability to run iOS versions that support the specific multi-user environment.

The iPad Air 1, released in 2013, originally came with an earlier version of iOS, and it lacks the necessary hardware and software requirements to utilize Shared iPad functionality, which was introduced later with newer iOS versions. In contrast, the iPad mini 4, iPad 5th generation, and iPad Pro (1st generation) have the specifications and compatibility needed to support Shared iPad, making them suitable for environments such as schools or businesses where multiple users need to access the same device. This differentiation is key when considering the iPad Air 1 in relation to the other models, as it simply cannot take advantage of this particular feature due to its limitations from both a hardware and software standpoint.