Dell OptiPlex 990 Desktop User manual
TECHNICAL GUIDEBOOK—
INSIDE THE OPTIPLEX 990
TM
DELL
OPTIPLEX 990
TM
TABLE OF CONTENTS
O V E R V IE W
Mini Tower Computer (MT) View 3-4
Desktop Computer (DT) View 5-6
Small Form Factor Computer (SFF) View 7-8
Ultra Small Form Factor Computer (USFF) View 9-10
M A R K E T I N G S Y S T E M C O N F I G U R A T I O N S
Operating System, Chipset 11
Processor 12
Memory 13
Drives and Removable Storage, System Expansion Slots 14-15
Graphics/Video Controller 16
External Ports/Connectors 16
Communications—Network Adapter (NIC), Wireless 17
Audio and Speakers, Keyboard and Mouse 17
Security, Software, Environmental, All-in-One Stands & Mounts, Service and Support 18
DETAILED ENGINEE RING S PECIF IC ATIONS
System Dimensions (Physical) 19
System Expansion Slots 19
System Level Environmental and Operating Conditions 20
Power 21-22
Audio 23
Communications 23-27
Graphics/Video Controller 28-30
Hard Drives 31-39
Optical Drive 40-42
Media Card Reader 43
BIOS Defaults 44
Chassis Enclosure and Ventilation Requirements 45
Environmental Attributes 46
Acoustic Noise Emission Information 47-50
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
3
MINI TOWER COMPUTER (MT) VIEW
FRONT VIEW
1Power Button, Power
Light
6Optical Drive (optional)
2Optical Drive Bay
(optional)
7Optical Drive Eject Button
3Headphone Connector 8USB 2.0 Connectors (4)
4Microphone Connector 9Drive Activity Light
5Diagnostic Lights (4)
BACK VIEW
10 Power Supply Diagnostic
Light
14 Expansion Card Slots(4)
11 Power Supply Diagnostic
Button
15 Security Cable Slot
12 Power Connectors 16 Padlock Ring
13 Back Panel Connectors
BACK PANEL CONNECTORS
1Mouse Connector 7Keyboard Connector
2Link Integrity Light 8USB Connectors (6)
3Network Connector 9DisplayPort Connector
4Network Activity Light 10 VGA Connector
5Serial Connector 11 Line-in/Microphone
Connector
6Line-out Connector
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
4
Number Name Number Name
1Internal Speaker Connector (INT_SPKR) 13 PCI Connector(SLOT3)
2Front IO Connector (FRONTPANEL) 14 PCI-e 4x Connector(SLOT4)
3Thermal Sensor Connector(THRM_2) 15 Intrusion Switch Connector
(INTRUDER)
4SATA 0 Connector(SATA0) 16 System Fan Connector (FAN_HDD)
5SATA 1 Connector(SATA1) 17 P2 Power Connector
(12V_PWRCONN)
6SATA 2 Connector(SATA2) 18 Processor Connector (N/A)
7SATA 3 Connector(SATA3) 19 CPU fan Connector (FAN_CPU)
8Internal USB Connector (INT_USB) 20 Memory Connectors(DIMM1, DIMM2,
DIMM3, DIMM4)
9Buzzer (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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
5
DESKTOP COMPUTER (DT) VIEW
FRONT VIEW
1Optical Drive 5Microphone Connector
2Optical Drive Eject Button 6Headphone Connector
3Power Button, Power
Light
7Drive Activity Light
4USB Connectors (4) 8Diagnostic Lights (4)
BACK VIEW
9Padlock Ring 13 Expansion Card Slots(4)
10 Security Cable Slot 14 Power Supply Diagnostic
Light
11 Power Connectors 15 Power Supply Diagnostic
Button
12 Back Panel Connectors
BACK PANEL CONNECTORS
1Mouse Connector 7Keyboard Connector
2Link Integrity Light 8USB Connectors (6)
3Network Connector 9DisplayPort Connector
4Network Activity Light 10 VGA Connector
5Serial Connector 11 Line-in/Microphone
Connector
6Line-out Connector
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
6
Number Name Number Name
1Internal Speaker Connector
(INT_SPKR)
13 PCI-e 1x Connector(SLOT2)
2Front IO Connector (FRONTPANEL) 14 Intrusion Switch Connector
(INTRUDER)
3Thermal Sensor Connector(THRM_2) 15 Thermal Sensor Connector(THRM_1)
4SATA 0 Connector(SATA0) 16 System Fan Connector (FAN_HDD)
5SATA 1 Connector(SATA1) 17 P2 Power Connector
(12V_PWRCONN)
6SATA 2 Connector(SATA2) 18 Processor Connector (N/A)
7Internal USB Connector (INT_USB) 19 CPU Fan Connector (FAN_CPU)
8PCI-e 16x Connector(SLOT1) 20 Memory Connectors(DIMM1, DIMM2,
DIMM3, DIMM4)
9PCI-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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
7
SMALL FORM FACTOR COMPUTER (SFF) VIEW
FRONT VIEW
1Optical Drive 5Microphone Connector
2Optical Drive Eject Button 6Headphone Connector
3Power Button, Power
Light
7Diagnostic Lights (4)
4USB 2.0 Connectors (4) 8Drive Activity Light
BACK VIEW
9Padlock Ring 13 Power Supply Diagnostic
Light
10 Security Cable Slot 14 Back Panel Connectors
11 Power Connectors 15 Expansion Card Slots(2)
12 Power Supply Diagnostic
Button
BACK PANEL CONNECTORS
1Mouse Connector 7Keyboard Connector
2Serial Connector 8DisplayPort Connector
3Link Integrity Light 9VGA Connector
4Network Connector 10 USB Connectors (6)
5Network Activity Light 11 Line-in/Microphone
Connector
6Line-out Connector
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
8
Number Name Number Name
1P1 power Connector (POWER) 12 LPC debug Connector (LPC_DEBUG)
2System fan Connector (FAN_HDD) 13 Battery Connector (BATTERY)
3Internal Speaker Connector (INT_SPKR) 14 P2 Power Connector
(12V_PWRCONN)
4Buzzer (BEEP) 15 Processor Connector (N/A)
5PCI-e 4x Connector(SLOT2) 16 CPU Fan Connector (FAN_CPU)
6PCI-e 16x Connector(SLOT1) 17 Power Switch Connector (PWR_SW)
7SATA 2 Connector(SATA2) 18 Memory Connector(DIMM3)
8SATA 1 Connector(SATA1) 19 Memory Connector(DIMM1)
9SATA 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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
9
ULTRA SMALL FORM FACTOR COMPUTER (USFF) VIEW
FRONT VIEW
1Optical Drive 6Headphone Connector
2Optical Drive Eject Button 7Microphone Connector
3Power Button, Power
Light
8USB Connectors (2)
4Drive Activity Light
5Diagnostic Lights (4)
BACK VIEW
10 Wi-Fi Antenna (optional) 17 Line-in/ Microphone
Connector
11 Network Activity Light 18 DisplayPort Connector
12 Captive Thumbscrew 19 VGA Connector
13 Padlock Ring 20 Serial Connector
14 Security Cable Slot 21 USB Connectors (5)
15 Power Connector 22 Network Connector
16 Line-Out Connector 23 Link Integrity Light
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
10
Number Name Number Name
1Front Panel Connector (FRONTPANEL) 10 SATA 1 Connector(SATA_1)
2Memory Connector(DIMM_2) 11 SATA 0 Connector(SATA_0)
3Memory Connector(DIMM_1) 12 P1 Power Connector(POWER1)
4CPU Fan Connector (FAN_CPU) 13 HDD-ODD Power Connector
(HDD_ODD_POWER)
5Internal Speaker Connector (INT_SPKR) 14 Intrusion Switch Connector
(INTRUDER)
6Buzzer (BEEP) 15 LPC Debug Connector (LPC_DEBUG)
7Front IO Connector (F_USB_AUDIO) 16 P2 Power Connector(12V_PWRCONN)
8System Fan Connector (FAN_HDD) 17 Processor Connector (N/A)
9Mini-PCI Socket (PCIE_MINICARD) 18 Battery Connector (BATTERY)
USFF System Board Components
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