Dell Dimension E521 - Manual (Page 13)

Setting Up and Using Your Computer
13
Back View of the Computer
1 voltage selection switch See the safety instructions in the Product Information Guide for more
information.
2 power connector Insert the power cable.
3 back panel connectors Plug USB, audio, and other devices into the appropriate connector.
See "Back Panel Connectors" on page 14 for more information.
4 card slots Access connectors for any installed PCI and PCI Express cards.
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