MANUF_BOARD_REV_A  497 drivers/usb/serial/io_usbvend.h #define MANUF_BOARD_REV_A		1	// Original version, == Manuf Rev A
MANUF_BOARD_REV_A  507 drivers/usb/serial/io_usbvend.h #define MANUF_BOARD_REV_A		1	// First rev of 251+Netchip design