Dell Dimension 5100C - Manual (Page 57)

Removing and Installing Parts
57
Back View
1 voltage selection switch (may not be available
on certain computers) See the safety instructions in the Product
Information Guide for more information.
2 power connector Insert the power cable.
3 back panel connectors Plug serial, USB, and other devices into the
appropriate connector.
4 card slots Access connectors for any installed PCI and PCI
Express cards.
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