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D540SA
Power button. Press this button to turn on your computer.
Optical disk drive eject button (optional). Press this button to eject the optical disk
drive tray.
Optical disk drive (optional). This optical disk drive reads or writes data to or from
optical discs.
Memory card readers (optional). This area contains one or more memory card reader
slots.
Microphone port. This Mic (pink) port connects a microphone.
Headphone port. This Line In (lime) port connects a headphone with a stereo mini-
plug.
USB 2.0 ports. These Universal Serial Bus 2.0 (USB 2.0) ports connect to USB 2.0 devices
such as a mouse, printer, scanner, camera, PDA, and others.
USB 3.1 gen1 or Type-C port (only for data transfer). The Universal Serial Bus 3.1
gen1 (USB 3.1 gen1) or Type-C port connects to USB 3.1 gen1 or Type-C devices such as
a mouse, printer, scanner, camera, PDA, and others.
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Chapter 1: Getting started
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