Features The CGS-1484E maximizes the performance of four external Serial ATA (eSATA) ports, providing throughput performance of over 800 MB/s* when used with CoolGear eSATA storage subsystems with built-in port multipliers. The controller is based on SiI3124 SATA II chip, supports port multiplier switching and connects four external Serial ATA device ports to an 8 lane physical, 4x/8x electrical PCI-express host connection. *Attached to 20 hard drives using four port multipliers (two or four KOMODO-4726), this card can reach a sequential read speed of over 800MB/s, enabling up to four uncompressed HD streams to be played simultaneously. 4 External SATA II ports SATA II compliant, 3 Gb/s SATA Gen 2 host and drive support 8x physical, 4x/8x electrical PCI Express host connection, compatible with 4x, 8x or 16x PCIe slot Support SiI3726 and SiI4726 SATA Port Multipliers Support RAID 0, 1, 0+1, JBOD, RAID5 (Windows only) OS Support: Mac OS X, Windows 2000, Windows XP, Server 2003, Linux, Mac Pro support