Acer 3000 - Universal Serial Bus; IEEE 1394 Port

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Universal Serial Bus
The USB 2.0 port is a high-speed serial bus which allows you to connect
USB peripherals without taking up precious system resources.
IEEE 1394 port
The computer's IEEE 1394 port allows you to connect to an IEEE 1394
supported devices like a DVD/CD-RW combo or DVD-Dual drive.