GagePort Power Supply USB The G-C441-USB powers the GagePort or GagePort stack from the wall outlet, just like the old G-C44x and A-68x cables. It is intended for heavier applications using more than a few Digital GagePorts and for analog applications including LVDT GagePorts. This is the correct power supply to interface the GagePorts with most SPC software packages, or software Win-Wedge. This GagePort Power Supply will work with Proficy ShopFloor SPC Software. Note... This power supply should not be used with VisualSPC Software. You will want to use the A-681 GagePort Power Supply.