Toshiba Satellite 3000-S304 User Guide - Page 27
Back, cooling vent, DC-IN jack, USB Universal Serial Bus ports, parallel port, modem port
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Finding Your Way Around Back 27 Back Cooling vent Cooling vent DC-IN jack USB ports Parallel port Modem port LAN port S-video out port RGB (monitor) port Infrared port Security lock slot The cooling vent prevents 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 DC-IN jack is where you plug in the AC adapter. 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 parallel port lets you connect a parallel printer or other parallel device, including ECP-compatible devices. The modem port lets you use a standard RJ11 telephone cable to connect the modem directly to a standard telephone line. For more information, see "Connecting the modem to a phone line" on page 82.