I/O CREST SI-PCI40074 PCI Mount 5 Port SATA II Multiplier Card JMB321 Chipset Compliant with Serial ATA II Port Multiplier Spec. Revision 1.2 Compliant with Serial ATA II Port Selector Spec. Revision 1.0 Compliant with Serial ATA High Speed Serialized AT Attachment Spec. Revision 2.5 Support 6-port 3.0 Gbps SATA II Interface