A5990-66530 | HP9000 J6750 Backplane PC board – Small rectangular board with two SCSI SCA connectors on one side and two cable connectors on the other – For connecting the ‘Hot Pluggable’ hard drives to the system – Mounts on the rear of the hard drive bay | HP 9000 Workstation J6750 Dual PA-8700 875MHz | PC BOARD |