The PEXSAT31E1 2-Port PCI Express SATA/e SATA 6 Gbps (SATA 3.0) Controller Card adds one internal SATA 3.0 (6 Gbps) & one external e SATA 3.0 (6 Gbps) port, through a single PCIe slot. Providing simple connectivity between a host computer & SATA 3.0 internal & external devices, the PCIe SATA/e SATA 3.0 adapter/controller card offers a cost-effective solution for connecting high-speed storage, such as High RPM Hard Drives, Solid State Drives (SSD), & external storage arrays, which in turn allows for easier data backups & archiving. With full support for SATA 3.0 hard drives & data transfer speeds of up to 6 Gbps, the adapter card features a native PCI Express single chipset that provides enhanced compatibility, reliability & performance for external SATA 600 MB/s storage needs. The controller card is backward compatible with SATA 2.0 devices, providing the versatility to use older storage, & features port multiplier capability with comm&-based & FIS-based switching for connecting multiple external hard drives to a host PC through a single external SATA connection. Suitable for installation in slimline or small form factor computer cases, the PEXSAT31E1 offers a dual profile solution, including a low profile bracket for easy installation.