EVGA nForce 790i Ultra SLI has a total of eight SATA-300 ports. Six of them are controlled by the south bridge chip, supporting RAID 0, 1, 0+1, 5 and JBOD. The other two ports are controlled by a Jmicron JMB362 chip, and one of them is an eSATA-300 port, soldered on the rear panel of the board. So from the eight SATA ports, seven are SATA-300 and one is eSATA-300. This is great as one of the criticisms we had on the EVGA nForce 780i was the absence of an eSATA port.