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Vostro 3681 Service Manual

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System board layout

This section illustrates the system board and calls out the ports and connectors.

Figure 1. System boards shipped with C-Media audio controller
System board layout
Figure 2. System boards shipped with Realtek audio controller
System board layout
  1. ATX Power connector (ATX_CPU1 and ATX_CPU2)
  2. CPU fan connector (Fan_CPU)
  3. Memory-module slots (DIMM1, DIMM2)
  4. M.2 2230/2280 connector (for SSD)
  5. Power switch connector (PWR_SW)
  6. SD card reader connector
  7. ATX Power connector(ATX_SYS)
  8. M.2 2230 connector (for WLAN card)
  9. SATA 3.0 data connector (SATA0)
  10. SATA 3.0 data connector (SATA3)
  11. SATA 3.0 power connector (SATA_PWR)
  12. PCIe expansion slots (SLOT1: PCIe x1, SLOT2: PCIe x16)
  13. Coin-cell battery
  14. CPU socket

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