# How to add 2nd USB port to VOXL-1?

Source: https://forum.modalai.com/topic/1353/how-to-add-2nd-usb-port-to-voxl-1
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-09-19 14:08:42 UTC by Ed Sutter
Replies: 6 · Views: 652

## Ed Sutter · 2022-09-19 14:08:42 UTC

Our configuration of the Voxl-Flight-Deck will (in some configurations) need to support two plug-in USB devices.  As best I can tell, the only adapter board that supports this is the modem-addon.  The case that forces us down the path of 2 plug-in devices is when we need to use a USB LTE modem; hence, we won't be using the modem-addon.
Any thoughts on how to do that (without custom hardware)?

## Reply by Eric Katzfey (ModalAI staff) · 2022-09-19 15:17:33 UTC

@Ed-Sutter I'm not sure I follow your comment. If you need to use 2 USB plug in devices and an LTE modem at the same time then why doesn't the LTE modem add-on board work for you?

## Reply by Ed Sutter · 2022-09-19 17:20:22 UTC (in reply to Eric Katzfey)

@Eric-Katzfey We need to support an LTE band that (as luck would have it) is not supported by any of the modems that are compatible with your add-on card.

## Reply by Eric Katzfey (ModalAI staff) · 2022-09-19 17:29:48 UTC (in reply to Ed Sutter)

@Ed-Sutter Oh, got it. Okay so one USB for external LTE modem and another for external camera. You can still use our LTE modem board but just don't put an LTE modem in the socket.

## Reply by Ed Sutter · 2022-09-19 17:31:01 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Right.. I was just wondering if there was a more efficient option.  Tx

## Reply by Chad Sweet (ModalAI staff) · 2022-09-19 17:39:22 UTC

You can purchase without a modem, it's a little cheaper and then just serves as a hub https://www.modalai.com/products/voxl-lte?variant=39300535681075

## Reply by Ed Sutter · 2022-09-19 19:44:53 UTC (in reply to Chad Sweet)

@Chad-Sweet Yep, that's likely what we'll have to do...
Tx