Dell Precision 390 Quick Reference Guide - Page 21
Back View (Tower Orientation), Product Information Guide
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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. Quick Reference Guide 21
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.