CF microdrive not recognized.

I have a router board 500 series and I installed a Hitachi 3K6 Microdrive 6GB 3600RPM 128KB Cache CompactFlash CF+ Type II.
I hear it working but nothing happents when I go to store in order to see it and format it.
Any ideas?
What can I do?
Thank you.

I don’t think so the are not compatible with Mikrotik

So witch card is compatible with my model in order to buy one?
Thank you!

I use cf cards from sandisk

I will try them and take a look what is going on with mine!
Thank you!

Don’t not use a microdrive but a cf card i think that is not compatible