> For the complete documentation index, see [llms.txt](https://wiki.cbunmanned.com/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/esc-connector/cm405-fc-bo-pinout.md).

# CM405-FC-BO Pinout

As viewed from above the 8 Pin SH Connector has the following pinout:

1. BAT (2-8s Voltage In)]
2. CURR (0-3.3v Current reading from ESC
3. GND (General Ground)
4. NC (Not Connected)
5. 1 (PWM 1)
6. 2 (PWM 2)
7. 3 (PWM 3)
8. 4 (PWM 4)

PWM 5 & 6 are also available (non populated 2.54mm Header). 

It is recommended to solder a power connection if you intend to use high power accessories. 

![](https://1886089318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FolH18CdGEWKpuo9G8NHx%2Fuploads%2FdbMjxISYEleVSixBUHdV%2Fimage.png?alt=media\&token=c9e05fd6-c9ce-45f2-899b-572800475814)