The ATTO ExpressPCI UL5D dual-channel Ultra320 host adapter offers the highest SCSI performance for demanding server and professional workstation environments. The ExpressPCI UL5D boasts data-transfer rates of up to 640 MB/sec. and offers support for PCI Express interconnect a high-speed (serial) bus interface. This host adapter is an ideal fit for high performance video/audio editing applications as well as Enterprise servers and high-end workstations running high-volume, mission-critical applications such as messaging and databases. Only ATTO ExpressPCI host adapters feature the exclusive Advanced Data Streaming (ADS) Technology that allows fast and efficient data movement with reduced CPU utilization.