Abstract: A PCMCIA PC card powers a fan for cooling a portable computer. The card having a first end, a second end, and defines an air conduit between the ends. A fan attaches to the first end for blowing air towards the second end and into a portable computer. A PC card connector attaches to the second end for attaching the PC card to the PC slot of the computer and for powering the fan. The card includes a fin in the air conduit for directing air from the fan to past the PC card connector.