It has Samsung S4LN021X01-8030 controller which is on Acelab supported list (https://blog.acelaboratory.com/pc-3000- ... dated.html)



Searching by P/N or Model it revealed to be Lenovo 128GB SATA III 6.0Gb/s OEM Internal SSD or Samsung 128GB PM841 NGFF M.2.

Connected to SATA adapter it's not detected on power on, but gets a little warm.

First Connected to NVMe to USB 3.1 adapter in Read Only mode it got detected as 128GB drive but not accesible.

Than I switched off Read Only mode switch and since than it does not get detected anymore.



Any solution for this one?

I've done some measurements. fzabkar can you help me figure out what's wrong?

It's definitely a SATA device. You can determine this from the CONFIG pins:

http://www.hddoracle.com/download/file.php?id=7418&mode=view

M.2 format identification:
http://www.hddoracle.com/viewtopic.php?f=106&t=2506

It appears that the PMU IC (Power Management Unit) is not outputting any voltages. It is receiving a 3.3V input, though. This would suggest that this IC is dead, or is not being enabled.

I can't see the marking on the small IC in the top right corner, but I suspect that it is an e-fuse or load switch. It would be switched on and off via the DEVSLP signal on the interface (pin #38). I would measure DEVSLP, but I suspect that it is OK.

_________________
A backup a day keeps DR away.

I would test the resistances between ground and each of the inductors at the PMU IC. If the power supplies power up in sequence, then it may be that a short on one output is holding up all the others.

_________________
A backup a day keeps DR away.

The e-fuse appears to be a house marked STEF4S, in which case it is enabled and working.

http://www.hddoracle.com/viewtopic.php?f=100&t=1615&p=8872#p8872

_________________
A backup a day keeps DR away.