 The analog output of each of the two digital audio channels was combined in the on-board analog mixer.All "Pro AudioSpectrum" cards included a CD-ROM interface.Most PAS cards were equipped with a NCR-designed 5380 SCSI controller made by Zilog that boasted a data transfer rate of 690kB/s using PIO (DMA was not supported); though intended for use with CD-ROM drives, these could interface with other SCSI devices with drivers written by Trantor Systems; Windows 95 includes drivers for the PAS SCSI interface and autodetects it as a PAS 16 Trantor SCSI host adaptor.