The external serial EEPROM provides customized USB vendor ID, product ID, and string flexibility. In addition, the EEPROM can contain a serial number which helps the system manufacturers to track down every single device they made even the design and PID/VID are all the same. SN11085 also provides in system programming (ISP) capability of the EEPROM. Products can be assembled without programming the EEPROM in advance, which saves both the production cost and time. Device and manufacturer's string can be saved in the flash instead of the external EEPROM for further total cost reduction. The USB Mass Storage Class compliance capability of SN11085 makes it a truly "plug-and-play" device without vendor drivers under Windows 2000/ME/XP and Mac OS 9/10. SN11085 provides PC boot up and data security function, which makes it an ideal replacement for the legacy floppy disk. With many of its advanced features and high performance, SN11085 is an ideal choice for building a portable USB to flash storage system. 1