Dell OptiPlex 990 - Page 6

DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
6
Number Name Number Name
1 Internal Speaker Connector
(INT_SPKR)
13 PCI-e 1x Connector(SLOT2)
2 Front IO Connector (FRONTPANEL) 14 Intrusion Switch Connector
(INTRUDER)
3 Thermal Sensor Connector(THRM_2) 15 Thermal Sensor Connector(THRM_1)
4 SATA 0 Connector(SATA0) 16 System Fan Connector (FAN_HDD)
5 SATA 1 Connector(SATA1) 17 P2 Power Connector
(12V_PWRCONN)
6 SATA 2 Connector(SATA2) 18 Processor Connector (N/A)
7 Internal USB Connector (INT_USB) 19 CPU Fan Connector (FAN_CPU)
8 PCI-e 16x Connector(SLOT1) 20 Memory Connectors(DIMM1, DIMM2,
DIMM3, DIMM4)
9 PCI-e 4x Connector(SLOT4) 21 Power Switch Connector (PWR_SW)
10 Buzzer (BEEP) 22 Battery Connector (BATTERY)
11 LPC Debug Connector (LPC_DEBUG) 23 P1 Power Connector (POWER)
12 PCI Connector(SLOT3)
DT System Board Components