Expresscard 2x eSATA ports with JMB36X chipset. SATA II Expresscard/34mm. Compliant to x1 Lane PCI-Express throughput of transfer rate up to 2.5 Gbps. Support SATA II specification with transfer rate up to 3 Gbps. Backward compatible to SATA 1.0a specification. eSATA compatible for all external ports. Support hard disk with Native Command Queue (NCQ) feature. Hot plugging supported