# Lenovo t480 EM7455 boot error: 1802 unauthorized network card plugged in

**URL:** <https://forum.sierrawireless.com/t/lenovo-t480-em7455-boot-error-1802-unauthorized-network-card-plugged-in/34439>\
**Category:** MC/EM Series\
**Created:** [February 1, 2025, 5:48pm UTC](https://forum.sierrawireless.com/t/lenovo-t480-em7455-boot-error-1802-unauthorized-network-card-plugged-in/34439 "2025-02-01T17:48:26Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [February 2, 2025, 3:02pm UTC](https://forum.sierrawireless.com/t/lenovo-t480-em7455-boot-error-1802-unauthorized-network-card-plugged-in/34439/9 "2025-02-02T15:02:06Z")

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I can see that it works already in linux with MBIM interface  
But seems it is in MBIM only mode.

I remember some user can enable AT command port in windows by using configuration.ini:

> [@USSD Software for Windows 10](https://forum.sierrawireless.com/t/ussd-software-for-windows-10/25041/35):
>
> that was the qualcomm modem i placed in my laptop

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