User's Manual

1.4.4 USB Connectors
Use these ports to connect up to three USB devices, such as
a mouse, full-size external keyboard, or printer.
USB is a peripheral expansion standard that supports a
data-transfer rate of up to 12 Mbps. USB peripherals have a
single standard for cables and connectors. You can install and
remove USB devices while the computer is on. This is known
as "hot swapping.”