Board: nRF54L15-DK (PCA10156), hardware version 1.0.0
OS tested: Windows (Lenovo Legion 5), also tested on Linux — same result on both
Problem
The board is not recognized by the computers. Windows Device Manager shows "unknown device" when plugged in via USB-C (J3 connector).
What I have confirmed
- SW4 (main power ON/OFF slide switch) is in the ON position — when switched OFF, Windows sees nothing at all, confirming it works and power is reaching the board
- JP1 jumper on P6 pins 2-3 is installed (tried both with and without — no change)
- The USB-C cable is data-capable (confirmed by successfully using it with a mobile phone)
What I have tried
- Multiple J-Link software versions — board does not appear in J-Link Configurator
nrfutil device recover— device is not listed- nRF Connect for Desktop → Programmer — no "Recover device" button appears (device not detected)
- Multiple USB ports on the same machine
- Multiple USB-C cables (all confirmed data-capable)
- Tested on both Windows and Linux — identical "unknown device" result
- Tested on a second computer (different machine, fresh install of SEGGER J-Link and nRF Connect for Desktop) — identical result
I don't know how to proceed, out of ideas. This is a newly ordered board, didn't want to go into soldering, buy another board to fix it. Or it needs some different device to make it work?
Any help appreciated.
