Why is my micro SD SanDisk not detected by my computer?
I hope you don't have the card in it, The computer does not see
the holder, only the card.
I don't know if your PC has a sd card slot, or your using a
reader.
But if you have the micro card in the card holder and you put it
in the PC or a reader
and it does not see the micro card, the reader, card holder, or
micro card could be bad.
Did you format the card, if you formatted the card with windows
and used the wrong format, you killed it, and its no good.
If you use any card,sd, mini,micro, in anything such as a cell
phone or anything like this,
you use the devise to format the card, never use windows to
format the card.
If you want, you just erase the card , that is, you delete the
files off the card,
DO NOT FORMAT the card just to remove what is on it.
So, the computer does not see a holder, a reader, it only see's
the card when it is in a holder or a reader. To answer your main
question.