IEI Integration IEM-9452 - Manual (Page 145)

IEM-9452 ETX Module
Page 129
USB The Universal Serial Bus (USB) is an external bus standard for
interfacing devices. USB 1.1 supports 12Mbps data transfer rates, while
USB 2.0 supports 480Mbps data transfer rates.
VGA The Video Graphics Array (VGA) is a graphics display system developed
by IBM.