User Manual

2-4 User’s Manual
L550/L550D/L555/L555D
Right side
The following figure shows the computer’s right side.
Figure 2-3 The right side of the computer
1
3
5
2
4
1. Optical disc drive
2. Universal Serial Bus (USB 2.0) ports
*3. Modem jack
4. DC IN 19V jack
5. Security lock slot
*Depending on the model you purchased.
Optical disc drive The computer is configured with a DVD Super
Multi drive. The full-size drive provides
high-performance execution of CD/DVD-ROM-
based programs.
Universal Serial Bus
(USB 2.0) port
Two Universal Serial Bus ports, which comply
with the USB 2.0 standard, are provided on the
right side of the computer.
Modem jack The modem jack allows you use to attach a
modular cable in order to connect the internal
modem directly to a telephone line.
Some models are equipped with a built-in
modem.
■ Connection to any communication line other than an analog phone line
could cause a computer system failure.
■ Connect the built-in modem only to ordinary analog phone lines.
■ Never connect the built-in modem to a digital line (ISDN).
■ Never connect the built-in modem to the digital connector on a
public telephone or to a digital private branch exchange (PBX).
■ Never connect the built-in modem to a key telephone system for
residences or offics.
■ Avoid using your computer modem with the telephone cable connected
during an electrical storm. There may be a remote risk of electric shock
from lightning.