Acer AcerPower 6500 User Manual page 27

1.10 USB
USB is a new serial bus design that is capable of cascading
low-/medium-speed peripherals (less than 12Mbps) such as keyboard,
mouse, joystick, scanner, printer and modem/ISDN. With USB,
complex cable connections at the back panel of your PC can be
eliminated.
See Figure 1-1 for the location of the USB interface on the system
board.
System Board 1-27