EM9191 Not DEtected

[s334030]

I previously had an MC7455 module installed, which worked correctly. Now I’m trying to replace it with an EM9191 module using an M.2 (NGFF) to Mini PCIe adapter, but the board doesn’t detect it. I also tested it on my PC with the same result.

[jyijyi]

You might need to see this thread on the pin 20 and pin 22:

EM9191 not found in LattePanda3Delta m.2Bkey slot

pin 20 → high (1.8V) pin 22 → high (1.8V) check pin 28 for power loss acknowledge pin 24, pin 68, pin 38 → VCC (3.3V) You might need to contact distributor for a schematic review Btw, other user can make it work in m.2 adaptor: