OnSpec's xSil 261 USB to UDMA4 CF or HDD Controller is the world's first UDMA 4 enabled CF controller. It also can interface with Hard Disk Drives to provide a compelling external storage solution. The firmware has built-in support for Microsoft's PD-DRM technology in addition to providing an SHA-256 based authentication protocol for implementing secure access to the Hard Disk Drive.

OnSpec offers reference designs, firmware, drivers, and manufacturing test software to make product development easy. OnSpec's technology provides optimum throughput and superior flash media compatibility