# Female Header F405

Top Side:

<figure><img src="https://1886089318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FolH18CdGEWKpuo9G8NHx%2Fuploads%2FqNoDHmDs1IWwAbiJm2Bk%2FCM405-FC%20Top.svg?alt=media&#x26;token=347ef7b2-762a-4437-bc04-1c59b0021f95" alt=""><figcaption></figcaption></figure>

Bottom Side&#x20;

<figure><img src="https://1886089318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FolH18CdGEWKpuo9G8NHx%2Fuploads%2FjOtYW8S9QirJzwf7LvN6%2FCM405-FC%20bottom.svg?alt=media&#x26;token=9b3c99fa-5b40-4d85-b4fd-c0039480af8d" alt=""><figcaption></figcaption></figure>

| Main Pin Header (viewed from mating side) |             |
| ----------------------------------------- | ----------- |
| RC Jumper                                 | RC Jumper   |
| SBus In                                   | Ground      |
| Inverted SBus Out                         | 5v          |
| PWM 5                                     | Serial Rx 5 |
| PWM 6                                     | Serial Tx 5 |
| Ground                                    | Serial Rx 4 |
| 5v                                        | Serial Tx 4 |
| Ground                                    | Serial Rx 3 |
| 5v                                        | Serial Tx 3 |
| Pi CM4 Tx                                 | Serial Rx 1 |
| Pi CM4 Rx                                 | Serial Tx 1 |
| Ground                                    | Serial Rx 2 |
| 5v                                        | Serial Tx 2 |
| Ground                                    | I2C SCL     |
| 3v3                                       | I2C SDA     |