Downloading iTunes

That's about the most basic laptop setup ever. It has 4GB of memory. the 32Gb are for storage, not memory.

The 32GB of storage is the problem. 32GB is barely enough for Windows on its own.

How much is actually free from that 32GB?

What happens when you try to download it to the SD card? Do you get an error? If so, what does it say?

Are you using the Edge browser to download iTunes? Or are you trying to download from the Microsoft Store app directly?

The Microsoft Store App has no option to change the download location unfortunately, and it will install the app directly on the system drive.

While it may be able to install many of the files onto the SD card, it may still need to place some files onto the system drive and will require space for that. And installing the App onto the SD card does not mean the iPhone backups will be stored on the SD card. The backup location is by default set to the users folder on the system drive and cannot be changed.

You can move the backup files to another location after the backup has been made, but the backup will always first be made on the system drive.

If possible, copy the iTunes installer onto the SD card to release some space, then try to find anything else you can delete from the system drive and see if it will let you install it.

As it is, this is more an issue with the storage space on the laptop than about iTunes.

If at all possible, return the laptop. Its clear its lack of space is going to be an issue going forward.

1. Memory and Storage are 2 different things. Entirely. An SD card provide Storage, not Memory. Memory is RAM, or the place where running Apps are kept for quick access when they run. Storage is were files and content is kept.

Memory will something like 8GB or 16GB on a normal run of the mil laptop. This has nothing to do with actual storage space which a download would require, and would generally be in the hundreds of Gigabytes. 128GB, 512GB etc...

2. What operating system, does this laptop have? Windows? ChromeOS? MacOs?

3. How much storage space does your computer actually have? How much of it is free? What is the exact error you are seeing? If the storage space is really bad, the computer may not work well at all. It generally expected that the storage space have at least 20% free for optimum performance. If there is not enough storage space in the computer for even a basic download such as iTunes there's something definitely very wrong with it.

4. When downloading files, whether you can point it to a different location has no relation to iTunes itself. How you point the download to a different location will depend on the browser you are using. What browser are you using?