Single Connection Attach hardware
(SCA, "Single Connector Attachment") A non-standard type of SCSI connector, used mostly by OEMs, which carries both power and data on one 80-pin connector. SCA SCSI drives tend to be cheaper but use with standard SCSI cables requires an adaptor and external termination.
(http://pcmech.com/show/harddrive/152/).
(2003-06-21)