Fussy card reader

[Gungnir]

Lexar Pro CF card reader has suddenly become fussy which USB port it's plugged in to. Only works from always-on powered port on laptop.

It won't work from any other port including powered USB hub. It worked fine from these ports a few days ago.

Any ideas as to why?

 

[Gungnir]

Thanks. I had unplugged everything the previous day whilst tidying up so sounds like the same problem.

 

[Gungnir]

Removed it from Device Manager, plugged it in and can now play musical USB ports with much joy and gladness