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System Board Layout
Dell™ OptiPlex™ 780 Ultra Small Form Factor—Service Manual
WARNING: Before working inside your computer, read the safety information that shipped with your
computer. For additional safety best practices information, see the Regulatory Compliance Homepage
at www.dell.com/regulatory_compliance.
1 intrusion switch connector (INTRUDER) 2 power connector (POWER)
3 processor connector (CPU) 4 front-panel connector (FRONTPANEL)
5 memory module connectors (DIMM_1, DIMM_2) 6 internal speaker connector
7 front-panel connector (FRONTPANEL) 8 front-fan connectors (FAN_FRONT)
9 PCI-E mini card (PCIE_MINICARD) 10 fan connectors (FAN_CPU)
11 power connector (POWER) 12 SATA drive connectors (SATA0, SATA1)
13 hard-drive or optical-drive power connector (HDD_ODD_POWER) 14 battery socket (BATTERY)
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