Tripp Lite's external HD68 active Terminator is the one for all of your external Ultra SCSI applications up to 160Mbps. Used with SCSI devices, like a scanner, which have a HD68 female port. Tripp Lite's active terminators provide the clearest data signal maximizing signal integrity. Supports Fast/UltraWide SCSI devices up to 160Mbps. Tripp Lite offers a lifetime replacement warranty on all cable products.