Dell Alienware Area 51 R2 (Late 2014) - Manual (Page 3)

1 Rear I/O accessibility lighting button
Press to illuminate the back panel ports.
2 Back panel
Connect USB, audio, video, and other devices.
3 Expansion bays
Connect external displays or projectors via graphics cards
or other peripherals via their respective PCI‑Express
cards.
NOTE: If you have two graphics cards, the one on
the top graphics slot will be the primary graphics
card. If you have three graphics cards, the one on the
bottom graphics slot will be the primary graphics
card.
4 Power cable port
Connect a power cable to provide power to your
computer.
5 Power-supply diagnostics button
Press to check the power‑supply state.
6 Power-supply diagnostics light
Indicates the power‑supply state.
7 Security-cable slot
Connect a security cable to prevent unauthorized
movement of your computer. This prevents the latch from
opening.
8 Security-cable slot latch
Release to allow opening the side panel.
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Specifications
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Back panel