This is a driver for the Sound Blaster PCI 128 with the Creative 5507 chip on card and the #3300 in FCC box. It is an Ensonic card branded by SB at the time of buyout. Therefore not supported. The install will lock up computer. So you have to restart in Safe Mode go to device manager an disable the Sound Blaster Legacy Device support. Then restart and reinstall drivers. Works great! Found bug on SB site knowledge base.