External Device Connections
Hardware Guide 6–3
Using a USB Device
USB devices function in the system the same way as comparable
non-USB devices do, with one exception: by default, USB
devices do not function unless an operating system that supports
USB is loaded. Windows XP Home and Windows XP
Professional do support USB.
To use a USB keyboard or hub that is connected to a USB
connector on the notebook during startup (before Windows loads)
or in a non-Windows application or utility, enable USB legacy
support.
Linking to an Infrared Device
(Select Models)
Some notebook models are IrDA-compliant and can
communicate with another infrared-equipped device that is
also IrDA-compliant. The IrDA connection speed standard
is 4 megabits per second (Mbps).
The infrared port supports low-speed connections up to
115 kilobits per second (Kbps) as well as high-speed connections
up to 4 Mbps.
Infrared performance might vary according to:
■ Performance of the infrared peripheral
■ Distance and angle between infrared devices
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