Click on the image to get a closer shot of the 3DS and AceKard R.P.G. Menu.
You can clearly see
the option to access microSD Card with games or to load Slot2 Card, but as we know there is no Slot 2 a.k.a. GBA Slot on the 3DS, so this menu is from the old AceKard for Nintendo DS and DS Lite handheld, and not specifically made for N3DS. It is also likely that the AceKard is running in DS MODE on the 3DS, but there is no way to verify that ot the athenticity of this image.