The iPad's model number doesn't just designate the generation of iPad such as the iPad 2 or iPad 4; it also differentiates an iPad with data connectivity (4G LTE) and one that can only connect via Wi-Fi. So, for every iPad generation and size, there are two model numbers.

Even more confusing, a model number is listed in the iPad's Settings under About. This model number designates the amount of storage in the iPad as well as the model, but even Apple's website doesn't use this number to identify the iPad.

Yes, it is confusing. Leave it to Apple to slap two model numbers onto each iPad.

The Model Number You Need

The model number you want to know is the one located on the back of the iPad. This model number is located below the Apple logo toward the bottom of the case immediately under iPad. There are two tiny lines of text, and depending on which iPad you are holding, the model number is on the first or second line. For the latest models, it is located just before the serial number. All model numbers begin with the letter A, so you can use that to determine which number is the model number.

The tiny numbers are tough to see, so if your eyesight is weak, use your smartphone to identify the iPad. Open the camera, aim it at the text and zoom in until the letters are big enough to be legible. You may need to hold the phone steady for a few seconds to allow the letters to come into focus, or you could go old school and use a magnifying glass or reading glasses.

When You Need to Know the Model Number

There are a few reasons why you may want to know the exact model number of your iPad. If you are having it repaired or calling in for support, you may need to identify your iPad. More importantly, if you are buying a used iPad, you should double-check that the model of the iPad matches the description. It is challenging to tell an iPad Air from an iPad Air 2 without the model number.

The same applies if you are selling the iPad on Craigslist or putting it on eBay. If you have any doubts about the iPad model, check the model number and match it to the iPad generation.

How to Use the Model Number to Identify the iPad?

Here is a list of the most recent iPad releases along with their model numbers:

Is your iPad model number not on the list? Cross check the big list of iPad models and model numbers, which also contains basic information about each iPad model. Feel free to use those descriptions in an eBay or Craigslist listing.

Are You Selling Your iPad?

Are you getting ready to sell your iPad or use a trade-in program? Due to the nature of trade-in programs, you won't get the best value for your iPad, but they are a hassle-free way to get some money for your iPad. You need to know the iPad's model to determine how much money you can get for it.

If you are selling on Craigslist or to a friend, one trick to finding the right price to want for your iPad is to use eBay's completed sales to get an idea how much similar iPads are going for on the market. You can get to the prices on eBay by clicking the Advanced link next to the search button. Remember to limit your results to Sold Listings and not Completed Listings, which includes items that did not sell.

Get more tips on how to sell your iPad.

Circuit design software. Imagine what could be done with that time! Faster design times; more time for optimization; or both!