If you don't have a case screw for the expansion slot If you don't have a case screw for the expansion slot Works great on my Gateway SX Computer. . Expansion Riser Card Lenovo ThinkCentre Mq Gateway: SX SXG SX SX SX SX SX SX SX SX SX SX SX SX Gateway PC SX Windows Vista Home 64bit with SP1 Intel Core2 Quad Q 4gigs of DDR3 for RAM Intel GMA X Intergrated video (vga and hdmi outputs).