Dear Laura Knotek,
My sd card's bran name is Samsung which capacity is 8GB.
I formated it by FAT32 (Default) file system.
And I am using windows 7 (32 bit os) on my Dell inspiron.
Also I unmounted it from A5 .now I mounted it to my Samsung tab3 which has kitkat 4.4.2 android version.
I am waiting for your kind response.