ultra33The Ultra33 does have its flaws, although most of them can be fixed by a little tweaking. First of all, if you happen to have a SCSI boot device, be sure to have the SCSIExpansion card:Promise (PTI) ULTRA33. The Retro Web Support Us Articles. Motherboards BIOS images Chips Chipsets Expansion cards Hard drives Optical drives Floppy & tape drives Drivers & software IO ports Expansion slots