Low-Voltage Differential (LVD) Signaling - this is a differential signaling method that was designed to use the advantages of differential signaling to allow long cable lengths, while reducing implementation cost and allowing for electrical compatibility with single-ended devices

• LVD signaling is required for Ultra2 or Wide Ultra2 SCSI and LVD is the exclusive signaling method for all SCSI modes faster than Ultra2.
• The fastest LVD SCSI chains can be up to 12m in length
• 68 wires, double shielded, twisted-pair
• Moulded connector casings, hand-locking screws
• Contacts with gold plating
• Maximum transfer data rate: up to 80 MB/s