Taiwan Silicon Integrated Systems (SiS) corporation makechip set, the individual expansion storage slot which in SiS 630/ SiS 730Sis prepared.Althoughthe connector form which is identical with the AGP slot is done, there is no compatibility,it installs the individual expansion storage module which loads video memory.It can not put the AGP corresponding video card and the like. Tothe video memory which you install it reaches the point where it can accessat128 bit width, video performance improves. In addition, if the extended card which loads SiS301 whichis the companion tip/chipof 630/730is installed,it is possible also to add performance such as DVI output to dual display and digital liquid crystal display.