Ver 4.01 adds support for Intel MMX, AMD K5, and Cyrix CPUs; 512 MB memory; USB; LS120 bootable, APM1.2; SCO Unix SMP with SCSI; DMI & Year2000 ready. For MBs shipped with 3.xx / 4.xx BIOSs ONLY - Fixes 3IDE Spindown and second channel support for Adaptec 3940UW.