Where do I put my SanDisk Adapter in my Mac?

I have a Mac OS X (Leopard) and I need to know how to insert the Adapter to my LG Chocolate Touch in my Mac. There is a Micro SD Card in the Adapter right now if that makes any difference. I've looked around my Mac computer, but there seems to be no slot for the Adapter to fit in. Please help me. If you are confused, just let me know and I'll add additional details. Thanks.