xtended cable lengths for external HVD Ultra Wide SCSI Devices For Servers Up to 15 High Voltage Differential 32-bit PCI 68-pin High-Density (for Ultra Wide SCSI) 50-pin standard (Ultra SCSI) and 68-pin high-density (Ultra-Wide SCSI) Up to 40MB/sec 15 High Voltage Differential Peripherals High Voltage Differential, active, programmable via SCSISelect configuration utility Regulatory Certification: FCC, UL, C-tick, CE, VCC Mean Time Before Failure (MTBF) : 411,093 hours at 40 degrees C