Pro Dual Compact Flash Adapter 886X Expresscard 34 Osx Req 10.5+ enables you to transfer files concurrently from two CF memory cards to your MacBook Pro on-location or in the field, studio, or office. Not only is it fast, its compact size allows it to fit into a gear bag, with no dangling cable. it delivers performance superior to adapters that depend on the Express Card slot's slower USB 2.0 interface.