Acer 6000 - Manual (Page 98)

AcerPower 6000 User’s Guide 4-20
4.6 Connecting USB Devices
The USB ports on the rear panel enable the system to support additional serial
devices without using up your system resources.
To connect a USB device, simply plug the device cable into a USB port marked
on the rear panel. See the following figure:
Figure 4-21 Connecting USB Devices
Most USB devices have a built-in USB port which allows you to daisy-chain other
devices.