Specifications

DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5

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