Ultra DMA
While questions about the latest incarnation of ATA/DMA drives are not likely to appear on the current A+ Exam, a good computer technician should be conversant with them and expect to see them as part of the certification renewal process. Ultra DMA/33 is a faster drive technology that can be used on virtually any Pentium motherboard. Ultra DMA/66 offers raw data transfers at twice the speed of its DMA/33 older sibling. It requires a compatible system bus on the motherboard (or a special controller card), BIOS, and special IDE cable certified for that speed. They are easy to identify. One 40-pin connector is blue, the other black. Most are also labeled for Ultra DMA/66.