# Balena USB interface

**URL:** <https://forums.balena.io/t/balena-usb-interface/366651>\
**Category:** balenaOS\
**Tags:** support, docker-compose, raspberrypi4\
**Created:** [February 11, 2023, 5:25pm UTC](https://forums.balena.io/t/balena-usb-interface/366651 "2023-02-11T17:25:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tv12345](https://avatars.discourse-cdn.com/v4/letter/t/bcef8e/32.png) [@tv12345](https://forums.balena.io/u/tv12345)\
**Post date:** [February 11, 2023, 5:25pm UTC](https://forums.balena.io/t/balena-usb-interface/366651/1 "2023-02-11T17:25:02Z")

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Hello,

I am facing an issue running an AT command python script on the Balena environment. The script works fine on a normal Raspbian environment, but when deployed on Balena it gives error:-

serial.serialutil.SerialException: device reports readiness to read but returned no data (device disconnected or multiple access on port?)

Weirdly enough as soon as I give a reboot command the script seems to be working perfectly until the reboot completes after the reboot it’s back to the same error.

I have enabled privileged mode during the build, any advice on resolving this issue?