Do you have a question?

Here are the answers to the most frequently asked questions.


What are the System Requirements

Windows XP sp3+, serial port, 100 Mb of disk space. Refer to installation for more info.

Does Unserver support Modbus ASCII and Modbus TCP?

Unserver only supports Modbus RTU and Modbus TCP.

Is there a Graphical User Interface?

We find that using json-based configuration is the easiest way to configure Unserver and track configuration changes. Therefore we didn't prioritize building a UI. We might build a GUI if there's enough demand.

Does Unserver run on Linux?

Not yet, but Linux support is planned.


Do I need to purchase a separate license for each PC that runs Unserver?

Correct, one license is valid for running a single instance of Unserver on one physical machine.

Can I upgrade from one package to another?

Yes, you can. Please contact support

Can a license be transferred to another PC?

It is possible. Please contact


Are there payment options other than with credit card?

You may also pay with Bitcoin. Please contact us if you wish to do so.

Can I get a refund?

Unfortunately, we cannot provide refunds, as it is not possible to revoke a product key. In order to avoid inconvenience, we encourage you to evaluate the product using the trial license to make sure it fits your need.

Still have questions?

If you can't find your answer here, please send us an email. We will be pleased to answer.

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