Exchange Server 2013 Standard Device CAL

IMPORTANT NOTE:  You must buy at least 5 CALS. New orders must also purchase a server license

The Standard CAL is designed to help users be more productive from virtually any platform, browser, or mobile device. The Standard CAL works with either server edition.

Licensing
A Device CAL permits one device (used by any user) to access or use Exchange Server. Device CALs are likely to be more cost-effective than User CALs if there are multiple users per device (for example, a call center or an airport kiosk). A minimum of 5 CALs and a server license is required.