# 28069M launchpad failed to operate in external mode

**URL:** https://forum.plexim.com/t/28069m-launchpad-failed-to-operate-in-external-mode/836
**Category:** TI C2000
**Tags:** rt-box, c2000
**Created:** [August 19, 2020, 10:31pm UTC](https://forum.plexim.com/t/28069m-launchpad-failed-to-operate-in-external-mode/836 "2020-08-19T22:31:13Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![shichenseu](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@shichenseu](https://forum.plexim.com/u/shichenseu)
#### Post date: [August 19, 2020, 10:31pm UTC](https://forum.plexim.com/t/28069m-launchpad-failed-to-operate-in-external-mode/836/1 "2020-08-19T22:31:13Z")

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I have done all the instructions step by step. But I still can’t operate the launchpad in the external mode.So maybe it’s because of the boot mode?What type of boot mode should I use to start external mode?

 ![191](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/319e6a704cd95b9c3df5911ae0f26d102b724e82.png) ![191](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/7dec23d0918dbdecd5c641730d8ca4dbbe366598.jpeg)

 ![191](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/261e6543e20d21f9fb828839b52f4718d667db4f.jpeg)

 ![191](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/261e6543e20d21f9fb828839b52f4718d667db4f.jpeg)

[c2000\_tutorial\_3\_1.plecs](https://forum.plexim.com/uploads/short-url/1aoBUTVAW6e3T9LrDfSuhEPxyjG.plecs) (32.2 KB)

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<div class="post-metadata">

### Author: ![shichenseu](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@shichenseu](https://forum.plexim.com/u/shichenseu)
#### Post date: [August 20, 2020, 6:35am UTC](https://forum.plexim.com/t/28069m-launchpad-failed-to-operate-in-external-mode/836/2 "2020-08-20T06:35:19Z")

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注意把Launchpad连电脑后，在设备管理器的USB节点下找到TI的设备，然后在属性第一页勾选Enable VCP。

I have solved it!