> ## Documentation Index
> Fetch the complete documentation index at: https://dragonwingdocs.qualcomm.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DIP Switches, Ports and Interfaces

## Ports and Interfaces

<img src="https://mintcdn.com/qualcomm-prod/P0rmO3AZfXx7cgqQ/Ubuntu/images/peripheral-interfaces/iq9075-ports-interfaces.png?fit=max&auto=format&n=P0rmO3AZfXx7cgqQ&q=85&s=63dc04c2a99038c04e72e6fe468f3c84" width="1200" height="774" data-path="Ubuntu/images/peripheral-interfaces/iq9075-ports-interfaces.png" />

## DIP Switches

The following images show the location of the DIP switches on the mainboard.

<img src="https://mintcdn.com/qualcomm-prod/P0rmO3AZfXx7cgqQ/Ubuntu/images/peripheral-interfaces/iq9075-dip_swtiches_1_2_3.png?fit=max&auto=format&n=P0rmO3AZfXx7cgqQ&q=85&s=662f24837f73111e9cb4d81faeb5fa45" width="811" height="324" data-path="Ubuntu/images/peripheral-interfaces/iq9075-dip_swtiches_1_2_3.png" />

<img src="https://mintcdn.com/qualcomm-prod/P0rmO3AZfXx7cgqQ/Ubuntu/images/peripheral-interfaces/iq9075-dip_swtiches_4_7_8_9.png?fit=max&auto=format&n=P0rmO3AZfXx7cgqQ&q=85&s=3f49173e617bf77bda2a89661fba7145" width="975" height="566" data-path="Ubuntu/images/peripheral-interfaces/iq9075-dip_swtiches_4_7_8_9.png" />

<Note>
  All functions on the mainboard operate with no DIP switch changes. The large red switch is for EDL/Fastboot; the smaller switches below are for mezzanines.
</Note>

| Switch | Connection when ON                                         | Connection when OFF (factory default)               |
| ------ | ---------------------------------------------------------- | --------------------------------------------------- |
| SW1-1  | PCIe0 routed to mezzanine                                  | PCIe0 connected to mainboard Wi-Fi module           |
| SW1-2  | PCIe1 routed to mezzanine                                  | PCIe1 connected to mainboard PCIe connector         |
| SW1-3  | SDIO routed to mezzanine                                   | SDIO routed to mainboard SD card                    |
| SW1-4  | DSI routed to mainboard flex connector                     | DSI routed to mezzanine                             |
| SW1-5  | CSI0 routed to mezzanine                                   | CSI0 routed to mainboard CSI flex connector         |
| SW1-6  | CSI1 routed to mezzanine                                   | CSI1 routed to mainboard CSI flex connector         |
| SW1-7  | CSI2 routed to mezzanine                                   | CSI2 routed to mainboard CSI flex connector         |
| SW2-1  | Main domain forced USB boot/EDL                            | No impact                                           |
| SW2-2  | Main domain fast boot                                      | No impact                                           |
| SW2-3  | Main domain and Sail domain forced USB boot/EDL (combined) | No impact                                           |
| SW2-4  | Sail domain Fastboot mode                                  | No impact                                           |
| SW3-1  | OSPI routed to mezzanine                                   | OSPI connected to onboard memory for MCU            |
| SW3-2  | Force MD and MCU PS\_HOLD                                  | No impact                                           |
| SW3-3  | Watchdog disabled                                          | RAM dump enabled                                    |
| SW3-4  | Boot from eMMC (located on interface and mezzanine)        | Boot from UFS                                       |
| SW3-5  | EUD enable                                                 | No impact                                           |
| SW3-6  | Skip MD BIST                                               | No impact                                           |
| SW4-1  | PWM-MODE for fan set to low                                | PWM-MODE for fan set to high                        |
| SW7-1  | RGMII voltage select 2.5V                                  | RGMII voltage select 1.8V                           |
| SW8-1  | USB to M.2 connector for NFA765 module on mezzanine        | USB to M.2 connector for NFA765 module on mainboard |
| SW9-1  | SAIL CAN GPIOs routed to mezzanine                         | SAIL CAN GPIOs routed to JLS1 connector             |

<Note>
  **SW2-1** is not enabled in software. **SW2-3** puts both domains into EDL mode simultaneously — required for software download.
</Note>

## Other Buttons and Switches

* The **side-mounted slide/toggle switch** (position 25) is the **main power on/off** control. To power cycle or reset the device, flip the switch — no button press or hold is required.
* A **small push button** (position 26) is currently **inactive**. It is connected to **GPIO 6** and reserved for a future software feature.