# Voxl2: how to enable PCIe?

Source: https://forum.modalai.com/topic/3665/voxl2-how-to-enable-pcie
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2024-07-23 07:31:11 UTC by jfuchs
Replies: 2 · Views: 585

## jfuchs · 2024-07-23 07:31:11 UTC

I am fairly new to the Voxl2 board and was tinkering with another m.2 PCIe card connected to the 5G Modem Carrier Board. However, according to [[0]] PCIe seems to be disabled though. How to enable it on the stock OS? "lspci" gives me no output, not even a PCIe Host Controller, which let's me think it is disabled. I noticed it's "device tree" based, but could not find the right files though.

[0]: https://docs.modalai.com/voxl2-linux-user-guide/#pcie2

## Reply by modaltb (ModalAI staff) · 2024-07-23 15:47:59 UTC

Hi @jfuchs ,

The 5G modem is actually just using USB over the PCIe interface!  We didn't have many users using PCIe so we disabled it in favor of enabling 4 GPIOs...

That said, roughly a day after we did this, the PCIe requests started coming in (as the SW gods would have it ;).

I am going to generate a new build from the tip of our SDK which is 'alpha/beta' level, if you're up to try this out let me know.

Thanks,
Travis

## Reply by jfuchs · 2024-07-24 07:31:51 UTC (in reply to modaltb)

@modaltb Thanks for the response, Travis. My manager told me in the mean time, he is in contact with you regarding that topic already via mail. I think we'll focus on that, instead of having 2 communication channels ;)