CAL means Client Access License. A CAL is required if you want a client computer to access a Microsoft SQL Server.
We can supply Device CALs and User CALs.
Ideal for Software Audits.
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About Device CALs and User CALs
There are two types of CALs: Device CALs and User CALs. Choosing the right one can mean buying fewer CALs, thereby saving you money.
A Device CAL is assigned to a device (a computer such as a desktop). A User CAL is assigned to a user (a person such as a staff member).
If you have more users than devices, it is cheaper to choose Device CALs. For example, you have twenty staff sharing five computers.
But if you have more devices than users, it is cheaper to choose Users CALs. For example, you have twenty computers available for five staff.
Microsoft describe the difference as: A Device CAL permits one device (used by any user) to access or use the server software. A User CAL permits one user (using any device) to access or use the server software.