The PCIDRV.ZIP package is meant for OEM's or Distributors that will package our drivers for the customer when selling SCSI boards. The PCIDRV.ZIP package is very large. It is 1.4mb in size. The package contains all of our PCI-SCSI drivers that are current for all operating systems that we support. The PCIUTIL.ZIP package contains all of the current utilities that will help trouble shoot problems with our chipsets on your system along with drive formatting tools. If you only need drivers for DOS/Windows 3.xx or Windows 95 then download the zip package from that directory.