Have two stick on the pc are not displayed under H on the laptop.
The USB socket on the laptop is probably defective.
No, all others are displayed.
It is missing the specification of the operating systems.
If it is WIndows - are the sticks displayed in Disk Management?
Have win 10 and the stick will be displayed only the two and not plug in is also a sound
Did you already wrote. And if you call the disk management of Windows - are the sticks displayed there?