A:Answer I opened up my Lenovo, and see that both of these slots are open and available. However, be aware that the power supply for this machine is modest, and supplies a maximum of only 180 Watts. You need to carefully tally up the power already being used, and see if there is enough for the video card of your choice. Even a low end video card is going to use over 30 W. I think you are best advised to stick with the built in graphics.