Dell D23M002 Setup And Specifications page 14

NOTE: If you have two graphics cards, the card installed in PCI-
Express X16 (graphics slot 1) is the primary graphics card.
3 PCI-Express X4 slots (2)
Connect a PCI-Express card such as graphics, audio, or network card to
enhance the capabilities of your computer.
4 PCI-Express X16 (graphics slot 2)
Connect a PCI-Express card such as graphics, audio, or network card to
enhance the capabilities of your computer.
For optimal graphics performance, use a PCI-Express X16 slot for
connecting the graphics card.
NOTE: The PCI-Express X16 slot works at X8 speed only.
5 Power-supply cage release-latches (2)
Allows you to remove the power supply unit from your computer.
6 Power-supply diagnostics button
Press to check the power‑supply state.
7 Power-supply diagnostics light
Indicates the power-supply state.
8 Power port
Connect a power cable to provide power to your computer.
9 Service Tag label
The Service Tag is a unique alphanumeric identifier that enables Dell
service technicians to identify the hardware components in your computer
and access warranty information.
10 Side panel release latch
Allows you to remove the side panel from your computer.
11 Security-cable slot (for Kensington locks)
Connect a security cable to prevent unauthorized movement of your
computer.
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