All the other bad reviews are true. The FireWire reader has to have 6 or 9-pin ports that are powered to work.I am a proffesional photographer and only trust and use Sandisk III or IV CF cards. I could not get thereader to work on my new Dell. 4-pin firewire ports are the industry standard. Why would Sandisk put out a product that most computers cant use. I bought a PC Card 800 with 800 firewire, but it only works if you plug the pc card into an external power source. Way to many things to bring on the road. Way to many possibilities of things getting broken whne you need them both.I spent a few days researching on how to get the reader to work and lost money for the time wasted.Amazon sent me 2 of these readers by mistake (and charged me). I am willing to sell them both.