---
title: "User's trusted CA"
canonical: "https://docs.cuesystem.com/space/ADMINWEB/275546385/User's%20trusted%20CA"
format: markdown
---
On the "**User's trusted CA**" tab, you can upload the certificate of your own trusted certification authority to the unit. If you need to access HTTPS services from servers that do not have a certificate signed by the authorities embedded into the firmware and you need to verify these servers' certificates, you can use this page to upload the certificates of your own trusted root certification authorities.

> ℹ️ This can be useful, for example, if you use a proxy server that re-encrypts the data using a custom certificate that is signed by your own certification authority. Further details are described above in the [Proxy server settings](https://cue.atlassian.net/wiki/spaces/ADMINWEB/pages/273940848).

> ℹ️ The trusted root CA certificate must be in PEM format.

![image](media://2d4a6fab-5638-496b-ade7-039aa9a19b30)

- To upload the certificate, tap the "**Choose file**" button next to "**Root certificate**" and select the trusted root CA certificate file.
- Then upload a new certificate using the "**Upload**" button.