ATA-33
Ultra ATA

IDE which the Quantum corporation and the Intel corporation announced in 1996,connectstorage unitsuch as personal computerand hard disk(ATA) extended specification of standard.Inthe succession specification of EIDE which is standardizedas ATA -2, it was standardized in 1998asATA/ATAPI-4with ANSI. The highest data rate is 33MB/s. The Quantum corporation calls Ultra ATA, butthere arealso times which the Intel corporation calls "Ultra DMA", is called ATA-33 or DMA-33 etc. to in addition to.