Power button
Press to turn on the computer if it is turned off, in sleep state, or in hibernate state.
Press to put the computer in sleep state if it is turned on.
SD-card slot
Reads from and writes to the SD card.
Connect headphones or speakers.
Microphone port
Connect an external microphone to provide sound input.
USB 3.0 ports (4)
Connect peripherals such as storage devices, printers, and so on. Provides data transfer speeds up to 5 Gbps.
Optical drive
Reads from and writes to CDs and DVDs.
Optical-drive eject button
Press to open the optical drive tray.