Contents 3Contents1 Before You Begin . . . . . . . . . . . . . . . . . . . 9Recommended Tools . . . . . . . . . . . . . . . . . . . 9Turning Off Your Computer . . . . . . . . . . . . . . . . 9Before Working Inside Your Computer . . . . . . . . . 102 Removing the Computer Cover . . . . . . . . 133 Technical Overview . . . . . . . . . . . . . . . . . 15Inside View of Your Computer . . . . . . . . . . . . . 15System Board Components . . . . . . . . . . . . . . . 16Power Supply Unit (PSU) DC ConnectorPin Assignments . . . . . . . . . . . . . . . . . . . . . 18DC Power Connector P1 . . . . . . . . . . . . . . 18DC Power Connector P2 and P3(Graphics Card) . . . . . . . . . . . . . . . . . . 20DC Power Connectors P4–P7(HDD0–HDD3) . . . . . . . . . . . . . . . . . . . 20DC Power Connector P8 (PHY) . . . . . . . . . . . 21DC Power Connectors P9 and P10(Bay1 SATA and Bay2 SATA) . . . . . . . . . . . . 21DC Power Connector P11 and P12(BAY and BAY2) . . . . . . . . . . . . . . . . . . 21DC Power Connector P13 (FDI) . . . . . . . . . . 22
