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5.1 Using the USB Port
USB (Universal Serial Bus) is a hardware interface that enables you to connect multiple
devices (such as printers, mice, keyboards, storage devices, joysticks, digital cameras, and
video conference cameras, etc.) to your notebook computer, and up to 127 devices can be
attached. Besides, USB’s hot swap capability allows everything to be plugged in and
unplugged without turning the system off.
Microsoft, HP, Compaq, Intel, Agere, NEC and Philip are seven core members of USB-IF to
have worked on USB 2.0 standardization. USB 2.0 offers data transfer rate up to 480Mbps
(megabits per second) compared to USB 1.1 devices, which transfer at speeds of 12Mbps.
So, you could know that USB 2.0 can transfer data between the computer and its peripherals
40 times faster than USB 1.1. However, USB 2.0 is fully backward compatible, you will be
able to use a USB 1.1 device in a USB 2.0 compliant system.
• Depending on your operational requirements, you may need to disable other ports
in order to release system resource for the USB port.
• The USB bus distributes 0.5 amps (500 milliamps) of power through each port. For
the purpose of power saving, please disconnect your USB device while not in use.
5.2 Using an External Monitor Port
Your computer has a 15-pin Monitor port for supporting any external CRT or LCD color
monitor. You need a display signal cable (usually provided with the monitor). One end of the
cable must have a 15-pin connector for the system.
To connect an external monitor:
1. Turn off your computer and make sure the monitor power switch is turned off.
• The notebook computer must be powered off or suspended while the monitor is
being connected. Although you can connect the external Monitor without power off the
computer andthe external monitor, however, it is harmful to both devices and it shor-
tens the life of these devices.
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MANUAL INGLES OK 20/7/06 11:40 Página 74