Dell OptiPlex 990 - Page 4

DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
4
Number Name Number Name
1 Internal Speaker Connector (INT_SPKR) 13 PCI Connector(SLOT3)
2 Front IO Connector (FRONTPANEL) 14 PCI-e 4x Connector(SLOT4)
3 Thermal Sensor Connector(THRM_2) 15
Intrusion Switch Connector
(INTRUDER)
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 SATA 3 Connector(SATA3) 19 CPU fan Connector (FAN_CPU)
8 Internal USB Connector (INT_USB) 20
Memory Connectors(DIMM1, DIMM2,
DIMM3, DIMM4)
9 Buzzer (BEEP) 21 Power Switch Connector (PWR_SW)
10 LPC Debug Connector (LPC_DEBUG) 22 Battery Connector (BATTERY)
11 PCI-e 16x Connector(SLOT1) 23 P1 Power Connector (POWER)
12 PCI-e 1x Connector(SLOT2)
MT System Board Components