What is included in Microsoft SQL 2019 Device CAL?

Device access right –Licenses one device to reach SQL Server 2019.
Unlimited users – Any person on that device may connect.
Server+CAL part – The access half of Standard licensing.
All instances covered – Reaches every SQL instance in the environment.
Backward access – Also valid for 2017 and earlier servers.
Core Capacity – Grants access only, no SQL Server engine included.

What are the main benefits of Microsoft SQL 2019 Device CAL?

A SQL Server 2019 Device CAL is a Client Access License that authorises one physical device to access a SQL Server 2019 instance running under the Server + CAL model. It covers the device itself, so every user who logs in from that machine is permitted without buying a separate licence each.

Shared-device pricing – One licence covers many users per machine.
Shift-work friendly – Ideal for terminals used around the clock.
Predictable counting – Count devices, not fluctuating headcount.
Edition independent –The same CAL works with Standard servers.
Standalone licence – Not tied to one specific SQL server.
Downgrade access – Reaches 2019, 2017, 2016 instances too.

SQL Server Buying Guide: License Models and CALs Explained
How the Server + CAL and Per-Core models work, and how to choose the right SQL product for your environment.

What does a SQL Server 2019 Device CAL do?

It grants one device the legal right to access a SQL Server 2019 instance that is licensed under the Server + CAL model. A CAL is not software and installs nothing; it is a licence document that sits alongside the server licence. Any number of people using that single device may then query, write to, or run applications against the database without each needing their own licence. This makes it the access layer for SQL Server Standard 2019, the only current edition still sold with Server + CAL licensing.

What is the difference between a Device CAL and a User CAL?

A Device CAL licenses one machine for unlimited users, while a User CAL licenses one person for unlimited devices. Device CALs are cheaper when several people share fewer machines, such as 10 shop-floor terminals used by 40 staff across shifts, where 10 Device CALs replace 40 User CALs. User CALs win when one employee works across a laptop, desktop, and phone. Both CAL types cost the same per unit, so the decision comes down to whether your environment has more devices or more users.

SQL Server FAQ: Standard, Enterprise, and CALs
Frequent buyer questions on editions, User CAL versus Device CAL, and which licence fits which scenario.

Does this CAL include SQL Server itself?

No. The Device CAL only grants access; you still need a separate SQL Server 2019 server licence for the machine running the database engine. The Server + CAL model always requires both parts: one server licence per server, plus a CAL for every accessing device or user. If you only buy CALs without a server licence, no SQL Server instance is licensed to run. Buyers using the per-core licensing model do not need CALs at all, because cores cover unlimited access.

Which SQL Server versions can a 2019 CAL access?

A 2019 Device CAL can access SQL Server 2019 and any earlier version, such as 2017 or 2016, but it cannot access SQL Server 2022 or 2025. CALs are backward-compatible but never forward-compatible without active Software Assurance. This matters when planning upgrades: if you move the database engine to SQL Server 2022, the 2019 CALs stop being compliant and must be replaced with 2022 CALs. Always match or exceed the CAL version to the highest server version your devices touch.

Is there a separate CAL for Standard versus Enterprise?

No. There is only one SQL Server CAL per version, and it is used regardless of edition. In practice this means a 2019 Device CAL is paired with SQL Server 2019 Standard, because Enterprise has not been sold under the Server + CAL model for new agreements since April 2012. SQL Server Enterprise is licensed per core only, so it requires no CALs. If your database runs on Enterprise, do not buy CALs; if it runs on Standard with Server + CAL, the same CAL covers it.

Frequently asked questions about Microsoft SQL 2019 Device CAL

How many users can one Device CAL cover?

One Device CAL covers a single device used by any number of users. Ten people working three shifts on the same terminal still need only one Device CAL for that machine.

Does a Device CAL cover access through multiple SQL Server instances?

Yes. A licensed device may access every SQL Server instance in the same licensed environment, including instances on virtual machines, without an extra CAL per instance.

Can I mix Device CALs and User CALs in one environment?

Yes. Many companies use Device CALs for shared production or warehouse terminals and User CALs for office staff who switch between several devices. Both types use the same per-unit price.

Is a SQL Server CAL the same as a Windows Server CAL?

No. A SQL Server CAL only authorises access to SQL Server and is never included with Windows Server CALs, Microsoft 365, or any other CAL bundle. If a device also reaches a Windows Server, that needs its own separate Windows Server CAL.