MS Title Group:
A SQL Server device client access license (CAL) authorizes one computer to access SQL Server when the server is deployed using the Server/CAL model. Any number of users can use the device (for example, on a shared workstation).
This donation provides one device CAL. User CALs for licensing individuals 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.