Problem with usb stick

I have 2 usb connected to pc.
I checked and see both chdsks are ok.
One 7gig FAT usb (Active ,primary partition)

Sandisk 8 gig FAT usb (primary partition)
so my question is -why is the sandisk 8 gig -not Active ???
I tried changing the usbs in their socket- same reading just different drive letter.
if both File systems are ok – then why does the “sandisk 8 gig – Not display Active ????

Pity we can not uplaod screen shots here !!!