# Mangoh Yellow LED meaning

**URL:** <https://mangoh.discourse.group/t/mangoh-yellow-led-meaning/3473>\
**Category:** mangOH Yellow\
**Created:** [January 17, 2020, 12:18pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-led-meaning/3473 "2020-01-17T12:18:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mango](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@mango](https://mangoh.discourse.group/u/mango)\
**Post date:** [January 17, 2020, 12:18pm UTC](https://mangoh.discourse.group/t/mangoh-yellow-led-meaning/3473/1 "2020-01-17T12:18:49Z")

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After connecting mangOH Yellow to PC I see power led is ON and other LEDs blinking in following sequence: yellow-red-green-blue.  
I see no COM ports showing in Device Manager, and no IP connection to board.

What means LED blinking? Is it described somewhere?

Connection with console USB works, it is possible to login with ‘root’. There I can see messages:

[128.550365] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:2 cur:0 tx) bc(rx:2 tx:1) mode:FIFO slv\_addr:0x55 MSTR\_STS:0x0d1300c8 OPER:0x00000010  
[128.565500] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:2 cur:0 tx) bc(rx:2 tx:1) mode:FIFO slv\_addr:0x55 MSTR\_STS:0x0d1300c8 OPER:0x00000010

tried different cables and ports…

also notice during boot message ‘no misc partition found’ - is it ok, or hw failure ?

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**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\
**Post date:** [January 18, 2020, 3:55am UTC](https://mangoh.discourse.group/t/mangoh-yellow-led-meaning/3473/2 "2020-01-18T03:55:28Z")

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You will reference to do that in mangoh yellow GSG.