> For the complete documentation index, see [llms.txt](https://bananapi.gitbook.io/banana-pi-bpi-r2-open-source-smart-router/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bananapi.gitbook.io/banana-pi-bpi-r2-open-source-smart-router/chapter1/bpi-r2-usb-30-interface.md).

# BPI-R2 USB 3.0 interface

BPI-R2 have two USB 3.0 interface on board.so you can connect Keyboard,mouse, USB camera and ... on BPI-R2

![](/files/-M2HXKbvneDeAp7M_Bwl)

USB 3.0 Port also can used be PCIE interface , PCIE 2 PIN define , if you want use two pcie , you can use this way

ues pcie pin with BPI-4G module

![](/files/-M2HXKbxqiEpFQrhtsey)

```
note:  PIN define can use on BPI-R2
```

![](/files/-M2HXKbzdv4cFeWlMYCi)、

add 4G module on BPI-R2 :

![](/files/-M2HXKc00gTqC1Zw4wA2)