Specifications

DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5

Number Name Number Name

1 P1 power Connector (POWER) 12 LPC debug Connector (LPC_DEBUG)

2 System fan Connector (FAN_HDD) 13 Battery Connector (BATTERY)

3 Internal Speaker Connector (INT_SPKR) 14 P2 Power Connector

(12V_PWRCONN)

4 Buzzer (BEEP) 15 Processor Connector (N/A)

5 PCI-e 4x Connector(SLOT2) 16 CPU Fan Connector (FAN_CPU)

6 PCI-e 16x Connector(SLOT1) 17 Power Switch Connector (PWR_SW)

7 SATA 2 Connector(SATA2) 18 Memory Connector(DIMM3)

8 SATA 1 Connector(SATA1) 19 Memory Connector(DIMM1)

9 SATA 0 Connector(SATA0) 20 Memory Connector(DIMM4)

10 Front IO Connector (FRONTPANEL) 21 Memory Connector(DIMM2)

11 Intrusion Switch Connector (INTRUDER)

SFF System Board Components