Advanced SCSI Programming Interface
The Advanced SCSI Programming Interface (ASPI) is an established system of accessing Drives (with its origins in 1970's mainframe technology) which today is commonly supported by CDROM reading/ripping softwares. The performance of some Software/OS version combinations can be improved by installing the missing (or an alternative) ASPI driver, which is also sometimes called the ASPI 'Layer'. Windows 2000 and XP come with ASPI preinstalled and software can come with its own version. There is normaly little to gain from changing ASPI unless prompted by a specific problem.