→ Some older JMicron chips (especially early JMB36x) have known issues with UASP or certain SATA drives. May need a firmware update or driver from JMicron.
If the device appears in Device Manager but not in "This PC," the issue is often related to drive lettering or initialization rather than the driver. USB Based-External Storage-Solutions ... - JMicron jmicron generic scsi disk device
This typically appears in system logs or device managers (e.g., Windows Device Manager, Linux dmesg , or storage controllers) when a JMicron controller is detected, often in , eSATA adapters , or laptop add-on SATA ports . → Some older JMicron chips (especially early JMB36x)
→ Normal, but if drive capacity is wrong or missing, it could be a bridging issue. USB Based-External Storage-Solutions
If you're not using the device, you can try removing it: