860 EVO is randomly stoping to respond

Hey, for couple years I own Samsung 860 EVO SSD. For most of time it was used as built-in OS drive, recently after my old laptop died I've bought new one with built-in SSD, so I've decided to change 860 EVO into external drive. I ordered Icy Box IB-AC703-U3 and formatted disk.

My problem is that when I'm using it, while writing/reading transfer goes normally and at some point randomly it goes to 0 and sometimes work after re-plug sometimes not.

Things I did but didn't work:

• Changing USB port
• Updating drivers
• Formatting disk
• Unchecking on all possible ports "Allow PC to turn off this device to save energy"
• chkdsk /r /f

Problem is with drive? It's dying or something? Or maybe with adapter? It's too weak to handle SSD?

Thanks in advance,
Byyng

Windows 10 2004

try to use it with SATA cable in PC, if it didn't happen then problem is adapter.