Dell OptiPlex E1 - Manual (Page 87)

Working Inside Your Computer 5-11
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Your Dell computer has a removable expansion-card cage, which greatly simplifies
many installation procedures by allowing you to remove the riser board and all
installed expansion cards in a single step.
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To remove the expansion-card cage, follow these steps.
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POWER_1 Main power input connector
POWER_2 3.3-V power input connector
RISER Riser board connector
SERIALn Serial port connector
SLOT1 Microprocessor connector
MODEM Telephony connector
USB USB connector
VIDEO_UPGRADE Video-memory upgrade socket
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NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in your
online System User’s Guide.