PCMCIA 16/32 bit Card PC Cardbus Adapter for ExpressCard 34/54 Express Card Slot Laptop Notebook Supports ExpressCard 34mm and 54mm slot Notebook Compliant with PC Card Standard 8.1 Specification. Compliant with PC Card Standard 8.1 16-bit Specification. Supports any 16-bit/32-bit PC Card applications. Equipped with 2 LEDs for indicating power and access status.