Back view (tower orientation) – Dell Precision 390 User Manual
Page 21
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Quick Reference Guide
21
Back View (Tower Orientation)
1
2
3
4
1
power connector
Insert the power cable into this connector.
2
voltage selection switch
See the safety instructions located in the Product Information Guide for more
information.
3
back-panel connectors
Plug serial, USB, and other devices into the appropriate connector.
4
card slots
Access connectors for any installed PCI or PCI Express cards.
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