incompatible
When one thing, for example software, will not work with another. For example, a program running on a Windows PC may not run on a Mac, because the two systems may be incompatible. This also applies to hardware.

When one thing, for example software, will not work with another. For example, a program running on a Windows PC may not run on a Mac, because the two systems may be incompatible. This also applies to hardware.