Exchange Server Device CAL - Standard (ソフトウェア アシュアランス込)

日本語でCALの説明を見る（Microsoftウェッブサイトより） 

This standard device client access licence (CAL) authorises one computer to access Exchange Server, regardless of the number of users (for example, on a shared workstation). It is valid for Exchange Server 2010 Enterprise and Standard editions, as well as previous versions of Exchange Server.

Enterprise Exchange Server CALs (user and device) are also available, providing access to additional features not covered by the standard CAL.

User CALs are also available. A user CAL authorises a user to access Exchange Server from any device (for example, when an employee accesses the server from a computer at work and another at home).

Note: This licence does not require media, licence keys, or setup codes.