# 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.
The LVDS display for bring up is DV215FHM R01-DE10_LVDS_DISPLAY.
LVDS panel isn’t included in the Dragonwing RB3 Gen 2 Industrial Kit package.
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.
Hub 1 Port 0 (USB-C/KTM5030 Feed) = Upstream port
Hub 1 Port 1 (USB 3 connection included with the mezz connections) = Downstream port
Hub 1 Port 0 = Downstream port
Hub 1 Port 1 = Upstream port