as the
big book says for the PAR: The PAR contains what appears to be a SCSI controller and an IDE controller for use as dedicated drives for capturing video. The PAR may be limited to hard drives of 8GB or less, but this is unconfirmed. Cards containing a Revision A 35-PAC-AUB may have problems if a second IDE drive is added. In order to fix this problem, the chip needs replacing with a Revision B 35-PAC-AUB. The DR-2150 is the NTSC version of the card, whilst the DR-3150 is the PAL version.
