Dell OptiPlex 980 (Early 2010) - Manual (Page 12)

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System Board Layout
Dell™ OptiPlex™ 980 Service Manual—Mini-Tower
1 service mode jumper (Service_Mode) 2 RTC reset jumper (RTCRST)
3 battery socket (BATTERY) 4 PCI card connectors ( SLOT 2 & 3)
5
PCI Express x16 card
connector(SLOT1)
6
PCI Express x16 (wired as x4) connector (Slot
4)
7 internal serial card connector (Serial2) 8 speaker connector (INT_SPKR)
9
PCI Express x1 wireless card
connector (PCIE_WLS1)
10 thermal sensor connector THRM3)
11 fan connector (FAN_CPU) 12 power connector (12V POWER)
13 memory module connectors (DIMM_1-
4)
14 front panel connector (FRONTPANEL)
15 internal buzzer (BEEP) 16 password jumper (PSWD)
17 SATA drive connectors (SATA0-3) 18 intruder connector (INTRUDER)
19 internal USB connector (INT_USB) 20 front I/O connector(FIO)
21 power connector (MICRO_PWR)
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