# VOXL Mini LTE modem USB connection not working

Source: https://forum.modalai.com/topic/4276/voxl-mini-lte-modem-usb-connection-not-working
Category: ESCs, Sensors and Accessories (https://forum.modalai.com/category/15/escs-sensors-and-accessories)
Tags: cellular
Posted: 2025-03-21 02:04:10 UTC by dan64
Replies: 3 · Views: 1354

## dan64 · 2025-03-21 02:04:10 UTC

Hi, we're trying to do something very similar to [this post](https://forum.modalai.com/topic/2779/how-to-connect-volx2-mini-to-lte-modem) and connect the VOXL2 Mini to a [LTE Modem v2 Pro](https://docs.modalai.com/lte-io-breakout-usb-hub-datasheet/).

We connected the J3 on the VOXL 2 mini to the standalone USB host on J7 on the LTE Modem, and are using the standalone power on J4 of the LTE Modem to supply voltage. We can verify with voltimeter and led lights that power is going to the LTE Modem, but we don't see any indication of data transfer or detection of the Sierra device or other USB devices on the LTE Modem.

Can you verify that this wiring is correct when using LTE Modem v2 Pro with the VOXL2 Mini. If it is correct, is there some other piece we might be missing, like configuration changes we might need to make to get data flowing between these 2 components?

## Reply by tom (ModalAI staff) · 2025-03-21 19:28:17 UTC

@dan64 It may be helpful to post a picture of your setup so we can catch any wiring issues

## Reply by dan64 · 2025-03-26 02:11:03 UTC (in reply to tom)

| [VOXL 2 Mini](https://docs.modalai.com/voxl2-mini-connectors/) | [LTE Modem v2 Pro](https://docs.modalai.com/lte-io-breakout-usb-hub-datasheet/) |
|---|---|
| ![1000002779-small.jpeg](https://forum.modalai.com/assets/uploads/files/1742954708518-1000002779-small-resized.jpeg) | ![1000002777-small.jpeg](https://forum.modalai.com/assets/uploads/files/1742954698973-1000002777-small-resized.jpeg) |
| ![1000002780-small.jpeg](https://forum.modalai.com/assets/uploads/files/1742954713094-1000002780-small-resized.jpeg) | ![1000002778-small.jpeg](https://forum.modalai.com/assets/uploads/files/1742954638149-1000002778-small-resized.jpeg) |

## Reply by Vinny (ModalAI staff) · 2025-03-26 18:15:21 UTC (in reply to dan64)

Hi @dan64 
That is not the standalone Modem board variant and many other components are missing to make this work.
We do not currently sell the "standalone" version of the M0090 (5G) or M0130 (4G LTE), so sadly your efforts will hit a dead end.