MS Title Group:
A SharePoint Server Standard device client access license (CAL) authorizes one computer or other device to access SharePoint Server, regardless of the number of users (for example, a shared workstation).
This donation provides one Standard device CAL. Standard user CALs for licensing individuals and additive Enterprise CALs (user and device) for accessing additional features are also available.
This license does not require media, license keys, or setup codes.
CALs, ECLs, and management licenses (MLs) offered through TechSoup are always for the currently offered version of the server software. However, these licenses can also be used with earlier versions of the server software.
Under the Software Assurance program, you have the right to install any new release of products covered in the agreement during the term of your coverage.
Product restrictions can be found under Microsoft's eligibility guidelines.