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The SI-PEX40137 8-Port PCI Express 2.0 SATA Controller Card adds 8 AHCI SATA III ports to a computer through a PCIe x4 or larger slot- delivering multiple internal 6Gbps connections for high-performance hard drives and Solid State Drives (SSDs).

The SI-PEX40137 uses two Marvell 9215 that can be used for embedded platform applications such as home NAS/media servers- DVR/NVR and set-top boxes- or vendors can develop their own software RAID boxes with FreeNAS.
Features
Using a ASM1806 PCIe bridge elimate the need for a Port Multiper when combining the Dual Marvell 9215 Chipset allowing to reach maximum bandwidth per port
Compliant with PCI-Ecpress Specification v2.0 and backwards compatible with PCI-E 1.x
Supports Communication Speeds: 6.0 Gbps- 3.0 Gbps- 1.5 Gbps
Support Native Command Queue- Support Hot plug and Hot Swap
Supports AHCI 1.0 programming interface registers for the SATA controllerSpecifications
Weight: 0.8 lbs