Lenovo ThinkCentre Edge 71 Hardware Maintenance Manual (HMM) (May 2012) - Thin - Page 111
System board part locations on shows the locations of the parts on the system board.
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Locating parts on the system board Figure 36 "System board part locations" on page 107 shows the locations of the parts on the system board. Figure 36. System board part locations 1 4-pin power connector 2 Microprocessor 3 Microprocessor fan connector 4 Memory slot 1 (DIMM1) 5 Memory slot 2 (DIMM2) 6 Thermal sensor connector 7 24-pin power connector 8 Power fan connector 9 SATA connectors (3) 10 Front panel connector (for connecting LED indicators and power switch) 11 Front USB connector 1 (for connecting USB ports 1 and 2 on the front bezel) 12 Clear CMOS (Complementary Metal Oxide Semiconductor) /Recovery jumper 13 Front USB connector 2 (for connecting additional USB devices) 14 Front USB connector 3 (for connecting additional USB devices) 15 Battery 16 Serial (COM2) connector 17 Front audio connector 18 Internal speaker connector 19 PCI Express x1 card slots (2) 20 PCI Express x16 graphics card slot 21 System fan connector Chapter 9. Replacing FRUs (Machine Types: 1578, 1583, and 1652) 107