Abstract: A composite printed circuit card guide and holding device including a rigid, U-shaped support member which slidably receives a printed circuit card engaging means is provided with slots adjacent the ends thereof for receiving the respective ends of the engaging means in order to inhibit relative movement between the support member and the engaging means. The interengagement of the ends of the engaging means and the support means also provides an obstruction-free entry into the card guide and holding device for enabling the smooth sliding entry of a printed circuit card into the subject device. In addition, the opposite end walls of the U-shaped support member are tapered to afford easy access to mounting holes provided in the base of the support member for facilitating mounting of the composite device to a cage or the like.