The Tempo SATA E4P SATA Host Adapter for PCI Express from Sonnet allows you to easily add Serial ATA capability to your Macintosh or Windows computer. The card gives you 4 eSATA connections and supports SATA II speeds of up to 3Gbps. It installs in an available PCI Express x4 slot.
Affordable solution for adding four high performance eSATA ports to your computer
SATA II compliant, 3Gbs and 1.5Gbs auto-negotiation
FIS-based port multiplier-aware to support up to 20 disk drives
Native PCI Express (PCIe) x4 host bus interface for high-performance applications
Spread Spectrum Clocking (SSC) support for compatibility with all SATA drives
Supports Mac OS X, Windows Vista (Enterprise or Ultimate), Windows Server 2003, and Windows XP Pro RAID features
Hot-swap drive support
Bus Mastering frees CPU from data I/O handling
48-bit LBA support for drives larger than 137GB