SCSI 2 devices typically use the HPDB50 connector while the wider HPDB68 connector is used for SCSI 3 connections You can connect your SCSI 2 and SCSI 3 devices together using this adapter from Monoprice! This adapter features a female HPDB68 connector for connecting to SCSI 3 devices and a male HPDB50 connector for connecting to SCSI 2 devices The entire adapter is molded