The SATA2-EC3421 is 2- port Serial ATA II to 1-lane 2.5 Gb/s ExpressCard. The SATA2-EC3421 is designed to provide two ports Serial ATA II connectivity (Serial ATA Generation 2 transfer rate of 3.0 Gb/s). The SATA2-EC3421 supports both AHCI and Legacy IDE controller to increase system feasibility, including Native Command Queuing (NCQ), ATAPI Device, Port Multiplier with Command-based Switching, Hot Plugging like USB and eSATA (External SATA) connection on SATA port to enhance SATA II capability. It features PCI Express bus and Serial ATA II interface to express high performance storage devices.
- SATA2-EC3421 does not support RAID function on Port Multiplier.
- SATA2-EC3421 supports Port Multiplier as Data HDD only.
- SATA2-EC3421 supports Port Multiplier Port 0 identification only during Option ROM stage.
- SATA2-EC3421 supports Port Multiplier Port 0 to Port 4 identification after Windows OS is active