HP ProBook 4230s Notebook PC - Manual (Page 60)

Using a USB device
Universal Serial Bus (USB) is a hardware interface that can be used to connect an optional external
device, such as a USB keyboard, mouse, drive, printer, scanner, or hub. Devices can be connected
to the system.
Some USB devices may require additional support software, which is usually included with the
device. For more information about device-specific software, refer to the manufacturer's instructions.
The computer has 3 USB ports, which support USB 1.0 and USB 2.0 devices. An optional USB hub
provides additional USB ports that can be used with the computer.
50 Chapter 8 External cards and devices