Following the chipset driver, the Integrated Drive Electronics (IDE) and Serial ATA (SATA) controllers are vital. The P35 chipset bridged the gap between older Parallel ATA hard drives and the emerging SATA standard. Without the correct Matrix Storage Manager or Rapid Storage Technology drivers from Intel, users may find that their hard drives operate in a slower compatibility mode, or worse, that the operating system fails to recognize connected storage devices during a fresh installation.