ultra33In the second half of 1997 EIDE’s 16.6 MBps limit was doubled to 33 MBps by the new Ultra ATA (also referred to as ATA-33 or Ultra DMA mode 2 protocol).Page 1 Ultra DMAATA Bus Master IDE Accelerator User’s Manual PROMISE . . . Delivering the Promise of Performance... Page 2 2-4 Operating system support Your ULTRA33 supports a