Figure 6. System board part locations
1 4-pin microprocessor power connector 2 Microprocessor
3 Microprocessor fan connector 4 Memory slots (DIMM)
5 Front-bezel connector
6 Internal-speaker connector
7 Storage-drive activity indicator
8 Flex bay fan connector
9 10-pin system board power connector
10 SATA power connectors
11 Front-fan connector
12 Clear CMOS/Recovery jumper
13 SATA 3 connector 14 SATA 4 connector or eSATA connector
15 SATA 2 connector
16 SATA 1 connector
17 M.2 solid-state drive slot 18 Wi-Fi card slot
19 Thermal-sensor connector
20 ThinkStation
®
LED connector
21 Front USB 2.0 connectors (available on some models)
22 Parallel connector
23 Serial port (COM) connector
24 Thunderbolt™ control connector
25 PCIe x16 card slot (negotiable link width x4)
26 PCIe x1 card slot
27 PCIe x16 card slot
28 Coin-cell battery
29 Rear-fan connector
30 E-lock connector
31 DisplayPort connector
32 Cover presence switch connector (Intrusion switch
connector)
33 PS/2 keyboard and mouse connector
Chapter 2. Product overview 39
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