# Voxl 2 Mini not detected via USB

Source: https://forum.modalai.com/topic/4503/voxl-2-mini-not-detected-via-usb
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2-mini
Posted: 2025-06-11 16:50:14 UTC by Sarika Sharma
Replies: 9 · Views: 1770

## Sarika Sharma · 2025-06-11 16:50:14 UTC

Hi ModalAI Team,

I'm working on a VOXL2 Mini (M0104) and facing persistent USB connection issues.

🖥️ Environment:

Host OS: Ubuntu 22.04 (also tested on Windows 10)

Cable: Known-good USB-C data cable

Power: Board powered via ESC; LED turns on

❌ Issue:

Ubuntu: lsusb shows nothing in any mode (ADB, Fastboot, or EDL)

Windows: Device Manager shows Unknown USB Device (Device Descriptor Request Failed) with a yellow triangle

I also tried to run flash-system-image.sh (see the attached screenshots)fails with “device not found” in fastboot mode

✅ Tried:

Different cables and USB ports (USB 2.0 & 3.0)

Different PCs (Windows and Linux)

Turned on EDL switch 

Force Fastboot

📌 Request:

Looking for guidance.
![Screenshot from 2025-06-11 17-19-23.png](https://forum.modalai.com/assets/uploads/files/1749662819129-screenshot-from-2025-06-11-17-19-23.png) 
![Screenshot from 2025-06-11 17-21-35.png](https://forum.modalai.com/assets/uploads/files/1749662829903-screenshot-from-2025-06-11-17-21-35.png)

## Reply by tom (ModalAI staff) · 2025-06-11 21:14:11 UTC

@Sarika-Sharma If you're using a VM on windows in order to run Ubuntu you'll need to setup USB device pass-through from your host machine.

I would recommend running linux natively if possible

## Reply by Sarika Sharma · 2025-06-12 05:05:08 UTC (in reply to tom)

@tom I am running Ubuntu natively  (not inside a VM). USB passthrough is not applicable in my case.

## Reply by tom (ModalAI staff) · 2025-06-12 17:19:43 UTC (in reply to Sarika Sharma)

@Sarika-Sharma With the device powered and plugged in via USB, what do you see with `lsusb`?

## Reply by Sarika Sharma · 2025-06-13 04:43:36 UTC (in reply to tom)

@tom ![Screenshot from 2025-06-13 10-11-11.png](https://forum.modalai.com/assets/uploads/files/1749789793502-screenshot-from-2025-06-13-10-11-11.png)

## Reply by tom (ModalAI staff) · 2025-06-13 16:45:37 UTC (in reply to Sarika Sharma)

@Sarika-Sharma Interesting, is there a different USB cable / port combo you can try? It may be worth trying with a USB-A to C cable as some C to C cables don't contain the proper data lines

## Reply by Sarika Sharma · 2025-06-15 09:07:18 UTC (in reply to tom)

@tom Yes, I’ve already tried using a USB-A to USB-C cable and also I used the same cable to connect VOXL2 previously, and it works perfectly — I'm able to access the ADB shell without any issues, so the cable and USB port are both functional. However, when I try to connect the VOXL2 Mini using the same cable, I’m unable to see any device listed with adb devices on Ubuntu natively(I have a dual-boot setup).I’ve also checked lsusb on Ubuntu in both normal power-on and while attempting EDL mode, but no Qualcomm device shows up.
When I switch to Windows, the VOXL2 Mini appears in Device Manager as "Unknown USB Device (Device Descriptor Request Failed)" with a yellow warning icon (screenshot attached).
![WhatsApp Image 2025-06-15 at 2.12.47 PM.jpeg](https://forum.modalai.com/assets/uploads/files/1749978375130-whatsapp-image-2025-06-15-at-2.12.47-pm.jpeg) 
![WhatsApp Image 2025-06-15 at 2.32.18 PM.jpeg](https://forum.modalai.com/assets/uploads/files/1749978385624-whatsapp-image-2025-06-15-at-2.32.18-pm.jpeg) 
![WhatsApp Image 2025-06-15 at 2.32.18 PM(1).jpeg](https://forum.modalai.com/assets/uploads/files/1749978395643-whatsapp-image-2025-06-15-at-2.32.18-pm-1.jpeg) 
![WhatsApp Image 2025-06-15 at 2.32.19 PM.jpeg](https://forum.modalai.com/assets/uploads/files/1749978403892-whatsapp-image-2025-06-15-at-2.32.19-pm.jpeg)

## Reply by tom (ModalAI staff) · 2025-06-16 16:50:41 UTC (in reply to Sarika Sharma)

@Sarika-Sharma Interesting, what kind of battery are you using? What is the voltage?

## Reply by Sarika Sharma · 2025-06-17 05:06:16 UTC (in reply to tom)

@tom I'm using a LiPo 3S battery with a voltage of 12V.

## Reply by tom (ModalAI staff) · 2025-06-17 16:59:08 UTC (in reply to Sarika Sharma)

@Sarika-Sharma Okay that should be fine, was just double checking the voltage wasn't too high for that ESC. 

I'd recommend submitting an RMA: https://www.modalai.com/pages/rma