Toshiba 2805-S503 User Manual page 27

The DC-IN jack is where you plug in the AC adapter.
The PS/2
compatible mouse or external keyboard. Alternatively, you can
connect an optional Y-cable that allows you to use a PS/2 mouse
and a PS/2 keyboard simultaneously.
The USB (Universal Serial Bus) ports allow you to connect USB
peripherals to your computer.
DEFINITION: USB is a peripheral expansion standard that
supports a data-transfer rate of up to 12 Mbps for
peripherals such as keyboards, pointing devices, and
monitors. USB peripherals have a single standard for
cabling and connectors. The USB standard allows hot
swapping of peripherals.
The cooling vents prevent the computer's central processing unit
(CPU) from overheating so that it can continue to perform at its
maximum speed.
CAUTION: To prevent possible overheating of the CPU, make
sure you don't block the cooling vents.
The modem port lets you use a modular cable to connect the
modem directly to a standard telephone line. For more
information, see
The LAN port lets you connect the computer to a local area
Ether
network using a 10/100 Ethernet link.
®
port allows you to connect an optional PS/2-
"Using the modem" on page
Finding Your Way Around
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88.