# Hardware overview
The following figure shows the block diagram outlining the high-level configurations of various connectors on the Qualcomm Dragonwing^™^ RB3 Gen 2 Industrial Kit:

Figure: Dragonwing RB3 Gen 2 Industrial Kit high-level configurations block diagram
- M.2 B Key (port 4) supports either a USB or PCIe interface, with USB set as the default.
- To switch to the PCIe interface, use the DIP2 BIT2 switch.
- Based on the connection, run the `lsusb` or `lspci` command to verify device enumeration.
- M.2 E Key (port 9) only supports the USB interface. Run the `lsusb` command to verify device enumeration.
- For PCIe x 4 (port 15), M.2 M Key (port 16), and PCIe x 4 (port 19), run the `lspci` command to verify device enumeration.
- For M2 E Key (port 20), to verify device enumeration:
- Run the `lspci` command for the WLAN interface.
- Run the `lsusb` command for the Bluetooth^®^ interface .
The following table lists the connectors available on the Dragonwing RB3 Gen 2 Industrial Kit:
| Port | Port name | Located on | Description | Dragonwing RB3 Gen 2 Industrial Kit | Dragonwing RB3 Gen 2 Industrial Kit |
| --- | --- | --- | --- | --- | --- |
| Port | Port name | Located on | Description | Version 03 | Version 02 |
| 1 | eDP connector | Industrial mezzanine board | eDP interface | ✔ | ✔ |
| 2 | Micro-USB connector | Industrial mezzanine board | Micro-USB 2.0 port (host or device) | ✔ | ✔ |
| 3 | 3.5 mm audio jack connector | Industrial mezzanine board | 3.5 mm Audio jack, connect using a headset. | ✔ | ✔ |
| 4 | Type A connector | Industrial mezzanine board | Type-A, downstream port of USB hub.
**Note**: Use USB-C to USB-C cable to connect port 28 and port 29. | ✔ | ✔ |
| 5 | Type A connector | Industrial mezzanine board | Type-A, downstream port of USB hub.
**Note**: Use USB-C to USB-C cable to connect port 28 and port 29. | ✔ | ✔ |
| 6 | RJ45 connector | Industrial mezzanine board | RJ45, 1G Ethernet port. | ✔ | ✖ |
| 7 | Type A connector | Industrial mezzanine board | Type-A, downstream port of USB HUB.
**Note**: Use USB-C to USB-C cable to connect port 28 and port 29. | ✔ | ✔ |
| 8 | Type A connector | Industrial mezzanine board | Type-A, downstream port of USB HUB.
**Note**: Use USB-C to USB-C cable to connect port 28 and port 29. | ✔ | ✔ |
| 9 | RJ45 connector | Industrial mezzanine board | RJ45, 2.5G Ethernet port. | ✔ | ✔ |
| 10 | DP connector | Industrial mezzanine board | DP port
Downstream port of KTM5030 bridge chip (default)
**Note**: Use USB-C to USB-C cable to connect port 28 and port 29. | ✔ | ✔ |
| 11 | Expansion header | Industrial mezzanine board | Connect RS232, RS422, and RS485 serial ports on expansion connectors. | ✔ | ✔ |
| 12 | IX connector | Interposer board | 2.5GbE Ethernet. Use IX to RJ45 adapter cable. | ✔ | ✔ |
| 13 | RJ45 connector | RB3 Gen 2 mainboard | RJ45 1G Ethernet port | ✔ | ✔ |
| 14 | IX connector | Interposer board | 10GbE Ethernet. Use IX to RJ45 adapter cable.
**Note**: Ports 17 and 21 don’t work simultaneously. Use a different
software version to switch between the ports. | ✔ | ✔ |
| 15 | Flex connector | Industrial mezzanine board | MIPI display
For Display datasheet, see HSA1BM02P3FB\_Spec\_V1.0
**Note**: MIPI display panel isn’t included in the Dragonwing RB3 Gen 2 Industrial Kit package. | ✔ | ✔ |
| 16 | FI-X30 connector | Industrial mezzanine board | LVDS display
Toggle the DIP switches:
On the mainboard, turn ON the DIP_SW_0 BIT_4.
On the industrial kit, turn ON SW2700 BIT_1.
**Note**:
| ✔ | ✔ |
| 17 | High-speed connector | Industrial mezzanine board | USB3.0 to high-speed pass-through expansion connectors, downstream port of USB HUB.
**Note**: Use USB-C to USB-C cable to connect port 28 to port 29. | ✔ | ✔ |
| 18 | High-speed connector | RB3 Gen 2 mainboard | USB3.0 to high-speed pass-through expansion connectors, downstream port of USB HUB. | ✔ | ✔ |
| 19 | M2 E key connector | Industrial mezzanine board | M2 E-Key, USB interface only, supports QCA402x module.
**Note**: QCA402x module isn’t available. Port 9 is for future use. | NA | NA |
| 20 | M.2 B Key connector | Industrial mezzanine board | Supports either USB or PCIe 5G module.
For USB version, use USB-C to USB-C cable to connect port 28 to port 29.
For PCIe version, turn OFF the SW2700 BIT_2 DIP switch.
**Note**: The T55 is the 5G module used for bringup, and it isn’t included in the Dragonwing RB3 Gen 2 Industrial Kit package. | ✔ | ✔ |
| 21 | M.2 M Key connector | Industrial mezzanine board | M2 M- Key, for NVMe module. | ✔ | ✔ |
| 22 | M2 E Key connector | Industrial mezzanine board | M2 E-Key for WLAN/Bluetooth, the default module is NFA765.
By default, WLAN is supported over PCIe.
Bluetooth^®^ is supported over USB. Use USB-C to USB-C cable to connect port 28 to port 29. | ✔ | ✖ |
| 23 | PCIe x 4 connector | Industrial mezzanine board | PCIe x 4 full size PCIe slot. (downstream of PCIe1) | ✔ | ✔ |
| 24 | PCIe x 4 connector | Industrial mezzanine board | PCIe x 4 full size PCIe slot. (downstream of PCIe0) | ✔ | ✔ |
| 25 | Type C connector | Industrial mezzanine board | Type-C port, use USB-C to USB-C cable to connect KTM DP bridge and USB HUB. | ✔ | ✔ |
| 26 | Type A connector | RB3 Gen 2 mainboard | Type-A
Downstream port of USB HUB. | ✔ | ✔ |
| 27 | Type A connector | RB3 Gen 2 mainboard | Type-A
Downstream port of USB HUB. | ✔ | ✔ |
| 28 | Audio header | Interposer board | Audio speakers | ✔ | ✔ |
| 29 | Type C connector | RB3 Gen 2 mainboard | Type-C port
Use for adb command and DP port. | ✔ | ✔ |
| 30 | HDMI OUT | RB3 Gen 2 mainboard | HDMI output
**Note**: Turn OFF the DIP switch, DIP\_SW\_0 BIT\_4. | ✔ | ✔ |
| | | | | | |
## DIP switch functionality mapping
The Dragonwing RB3 Gen 2 Industrial Kit has three DIP switches. The SW2600 and SW2700 DIP switches are on mezzanine board. The SWITCH 0 DIP switch is on the mainboard.
**SW2600 (DIP switch on mezzanine board)**

| Switch | Name | Off | On |
| --- | --- | --- | --- |
| 1 | UART0\_SEL | SP339E\_5\_UART | Pass through |
| 2 | QSPI1\_SEL | QSPI to embedded controller board | Pass through |
| 3 | SPI0\_SEL | SPI to TPM | Pass through |
| 4 | M.2\_QCA\_SPI\_SEL | SPI to M.2 E-Key (QCA) | Pass through |
| 5 | PCIE1\_2L\_SEL | QPS#1\_2L\_PCIe to M.2 M-Key (NVMe) | QPS#1\_2L\_PCIe to Pass through |
| 6 | NA | NA | NA |
**SW2700 (DIP switch on Mezzanine board)**

| Bit | Name | Off | On |
| --- | --- | --- | --- |
| 1 | DSI0\_SEL | DSI0 to LCM connector | DSI0 to LT9211C/LVDS |
| 2 | PCIE1\_1L\_SEL | QPS#1\_1L\_PCIe to M.2 B-Key (5G/WWAN) | QPS#1\_1L\_PCIe to FS1 PCIe connector |
| 3 | HUB1\_FLEX\_CMD\_3V3 | | |
| 4 | NA | NA | NA |
| 5 | NA | NA | NA |
| 6 | NA | NA | NA |
**SWITCH 0 (DIP switch on mainboard)**

| Bit | Name | Off | On |
| --- | --- | --- | --- |
| 1 | MIC switch | Onboard DMIC | Offboard DMIC |
| 2 | Debug UART | Debug UART | Offboard UART |
| 3 | CBL\_PWR\_\_N | NA | NA |
| 4 | HDMI switch | DSI0 to HS1 | DSI0 to HDMI bridge |
| 5 | Sensor IMU toggle | SPI to LS3 | SPI to onboard IMU |
| 6 | IMU external clock | External clock to IMU | IMU interrupt 2 to IMU |
Last Published: Jul 20, 2026
[Previous Topic
Introduction](https://docs.qualcomm.com/bundle/publicresource/80-82645-4/topics/introduction-industrial-kit.md) [Next Topic
Set up the Industrial Kit](https://docs.qualcomm.com/bundle/publicresource/80-82645-4/topics/rb3-set-up-industrial-kit.md)
Source: [https://docs.qualcomm.com/doc/80-82645-4/topic/rb3-hardware-industrial-kit.html](https://docs.qualcomm.com/doc/80-82645-4/topic/rb3-hardware-industrial-kit.html)