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