Alta USB2.0 Interface The key to the Alta platform is the embedded USB2.0 interface for simple direct connection to the host computer. USB2.0 is a 480 mb/s interface and can take full advantage of the 10 megapixel/second digitization rates possible in the Alta camera heads. The interface fully supports USB1.1 download speeds at about 530 KPixels/second. The Apogee USB2.0 interface is more than a simple patch to an existing USB chipset. When combined with SDRAM, a custom FPGA data management unit, and a custom FPGA camera controller, it becomes a full USB2.0 implementation without the drawbacks of a fully loaded USB port.