SCSI Terminator Active HS50MR

The 9552AI is a SCSI-2 active terminator for "single-ended" SCSI bus subsystems, to be mounted internally on the ribbon cable.

Every SCSI bus must have a terminator (terminating resistors) at each end of its internal and/or external bus. This extra step is what allows SCSI to operate at speeds well beyond that of its contemporary, IDE/ATA (both systems are now obsolete, replaced by SAS and SATA, respectively).

Active termination uses a sophisticated method of terminating the SCSI bus to allow for faster speeds and longer cable lengths than does passive termination.

This terminator is mounted on a Dual-Row 50-pin Socket connector.