<< << My Nikon 990 use CF+.
It is a Type I card.
Damn! >>
Ummm, I only know of two CompactFlash standards. Type II (like all microdrives) and Type I (most CompactFlash cards). If you have a CompactFlash Type II slot, this card will work. >>
The Nikon Coolpix 990 uses Type I only. Thus, a MicroDrive won't fit. However, that hasn't stopped everyone. One guy ripped apart his 990, and drilled and cut the metal casing, and filed down some of the case. Then he reassembled it and inserted a MicroDrive. Worked fine, although he says the MicroDrive gets quite warm and it eats batteries.