The equally dubious marketing response to EIDE from Seagate and Quantum, likewise built on ATA-2. DMA mode support. Some sources cite these as extensions to ATA-4, others as being synonymous. The good news is that all ATA types are compatible with one another, even if the faster drives need to brake for slower interfaces. Further, the damage caused by different manufacturers offering dissimilar ATA extensions seems nominal.
All brands appear to communicate reliably with one another.
Looking at the Real World That said, let s look at where the current market stands with these technologies. The following chart shows some of the latest and greatest offerings from the field s leading manufacturers. If it seems difficult to discern between brands, look on the bright side. In the mid-80s, there were nearly five dozen hard drive manufacturers. While the chart is fairly self-explanatory, some notes may be useful.