# EM7355 MBIM mode

**URL:** <https://forum.sierrawireless.com/t/em7355-mbim-mode/8028>\
**Category:** MC/EM Series\
**Created:** [July 1, 2015, 10:24am UTC](https://forum.sierrawireless.com/t/em7355-mbim-mode/8028 "2015-07-01T10:24:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ulrichsorensen](https://avatars.discourse-cdn.com/v4/letter/u/f6c823/32.png) [@ulrichsorensen](https://forum.sierrawireless.com/u/ulrichsorensen)\
**Post date:** [July 1, 2015, 10:24am UTC](https://forum.sierrawireless.com/t/em7355-mbim-mode/8028/1 "2015-07-01T10:24:40Z")

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Hi,

I have an EM7355 module. It has USB PID 0x9041. From what I can see in the datasheet, the module should support MBIM. However, when I look at the USB descriptor, none of the interface numbers match MBIM (12 or 13) according to the USB Driver Developers Guide.

Am I missing something or is there another interface which supports MBIM?

/Ulrich

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**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\
**Post date:** [July 1, 2015, 8:15pm UTC](https://forum.sierrawireless.com/t/em7355-mbim-mode/8028/2 "2015-07-01T20:15:06Z")

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> [@ulrichsorensen](#):
>
> Hi,
> 
> I have an EM7355 module. It has USB PID 0x9041. From what I can see in the datasheet, the module should support MBIM. However, when I look at the USB descriptor, none of the interface numbers match MBIM (12 or 13) according to the USB Driver Developers Guide.
> 
> Am I missing something or is there another interface which supports MBIM?

The module can be configured for different sets of functions (MBIM, QMI, AT, NMEA etc) using AT commands. Look for UDUSBCOMP in this forum or download the Extented AT Command reference from source:

[source.sierrawireless.com/resour … mmand\_ref/](http://source.sierrawireless.com/resources/airprime/minicard/2130616_ap_mcsl_umts_lte_extended_at_command_ref/)

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**Author:** ![ulrichsorensen](https://avatars.discourse-cdn.com/v4/letter/u/f6c823/32.png) [@ulrichsorensen](https://forum.sierrawireless.com/u/ulrichsorensen)\
**Post date:** [August 11, 2015, 2:10pm UTC](https://forum.sierrawireless.com/t/em7355-mbim-mode/8028/3 "2015-08-11T14:10:07Z")

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Hi,

Thanks for pointing me in the right direction 🙂

More useful information about extended at commands can be found here: [bc.whirlpool.net.au/bc/hardware/ … el\_id=1210](http://bc.whirlpool.net.au/bc/hardware/?action=h_view&model_id=1210)😃

/Ulrich