Abstract: A card guide is provided for guiding an edge portion of a circuit board with respect to a support member of a computer chassis. The card guide includes an elongated body having flanges oriented along the length of the body and a surface connecting the flanges. The flanges and the surface together define an elongated recess oriented along the length of the body. The recess in the body is configured to receive the support member of the computer chassis, and the flanges of the body are configured to engage the support member of the computer chassis to mount the card guide to the computer chassis. The recess in the body is also configured to receive the edge portion of the circuit board, and the flanges of the body are spaced from one another to accommodate the edge portion of the circuit board to guide the circuit board with respect to the computer chassis.