Dell D23M002 Setup And Specifications page 12

Connect an external microphone to provide sound input.
4 USB 3.1 Gen 2 Type-C port
Connect to external storage devices. Provides data transfer speeds up to 5
Gbps.
NOTE: This port does not support video/audio streaming or
power delivery.
5 USB 3.1 Gen 1 port
Connect peripherals such as external storage devices and printers.
Provides data transfer speeds up to 5 Gbps.
6 Optical-drive eject button
Press to open or close the optical drive tray.
7 Optical drive (optional)
Reads from and writes to CDs, DVDs, and Blu‑ray discs.
8 Power button (AlienHead)
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.
Press and hold for 4 seconds to force shut-down the computer.
NOTE: You can customize the power-button behavior in Power
Options.
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