Downloading an eBook is similar to checking out a physical book: the downloaded file (PDF or EPUB) will be available on a device for a limited time before it is "returned" to the library. This is useful if you will need to read the eBook without internet access.
You need a (free) EBSCO account to download an eBook through a UMKC Libraries subscription. Look for "EBSCO Sign In" at the top of the page to sign in or create account.