Dell OptiPlex 990 Desktop User manual
TECHNICAL GUIDEBOOK—
INSIDE THE OPTIPLEX 990
TM
DELL
OPTIPLEX 990
TM
TABLE OF CONTENTS
OVERVIEW
Mini Tower Computer (MT) View 3-4
Desktop Computer (DT) View 5-6
Small Form Factor Computer (SFF) View 7-8
MARKETING SYSTEM CONFIGURATIONS
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 ENGINEERING SPECIFICATIONS
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
BIOS Defaults 44
Chassis Enclosure and Ventilation Requirements 45
Acoustic Noise Emission Information 47-50
Ultra Small Form Factor Computer (USFF) View 9-10
Media Card Reader 43
Environmental Attributes 46
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
3
MINI TOWER COMPUTER (MT) VIEW
FRONT VIEW
1 Power Button, Power
Light
6 Optical Drive (optional)
2 Optical Drive Bay
(optional)
7 Optical Drive Eject Button
3 Headphone Connector 8 USB 2.0 Connectors (4)
4 Microphone Connector 9 Drive Activity Light
5 Diagnostic Lights (4)
BACK VIEW
10 Power Supply Diagnostic
Light
14 Expansion Card Slots(4)
12 Power Connectors 16 Padlock Ring
13 Back Panel Connectors
11 Power Supply Diagnostic
Button
15 Security Cable Slot
1 Mouse Connector 7 Keyboard Connector
2 Link Integrity Light 8 USB Connectors (6)
3 Network Connector 9 DisplayPort Connector
4 Network Activity Light 10 VGA Connector
BACK PANEL CONNECTORS
5 Serial Connector 11 Line-in/Microphone
Connector
6 Line-out Connector
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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
5
DESKTOP COMPUTER (DT) VIEW
FRONT VIEW
1 Optical Drive 5 Microphone Connector
2 Optical Drive Eject Button 6 Headphone Connector
3 Power Button, Power
Light
7 Drive Activity Light
4 USB Connectors (4) 8 Diagnostic Lights (4)
BACK VIEW
9 Padlock 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
1 Mouse Connector 7 Keyboard Connector
2 Link Integrity Light 8 USB Connectors (6)
3 Network Connector 9 DisplayPort Connector
4 Network Activity Light 10 VGA Connector
BACK PANEL CONNECTORS
5 Serial Connector 11 Line-in/Microphone
Connector
6 Line-out Connector
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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
7
SMALL FORM FACTOR COMPUTER (SFF) VIEW
FRONT VIEW
1 Optical Drive 5 Microphone Connector
2 Optical Drive Eject Button 6 Headphone Connector
3 Power Button, Power
Light
7 Diagnostic Lights (4)
4 USB 2.0 Connectors (4) 8 Drive Activity Light
BACK VIEW
9 Padlock 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
1 Mouse Connector 7 Keyboard Connector
2 Serial Connector 8 DisplayPort Connector
3 Link Integrity Light 9 VGA Connector
4 Network Connector 10 USB Connectors (6)
BACK PANEL CONNECTORS
5 Network Activity Light 11 Line-in/Microphone
Connector
6 Line-out Connector
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
8
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
DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.5
9
ULTRA SMALL FORM FACTOR COMPUTER (USFF) VIEW
FRONT VIEW
1 Optical Drive 6 Headphone Connector
2 Optical Drive Eject Button 7 Microphone Connector
3 Power Button, Power
Light
8 USB Connectors (2)
4 Drive Activity Light
5 Diagnostic 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 1.5
10
Number Name Number Name
1 Front Panel Connector (FRONTPANEL) 10 SATA 1 Connector(SATA_1)
2 Memory Connector(DIMM_2) 11 SATA 0 Connector(SATA_0)
3 Memory Connector(DIMM_1) 12 P1 Power Connector(POWER1)
4 CPU Fan Connector (FAN_CPU) 13 HDD-ODD Power Connector
(HDD_ODD_POWER)
5 Internal Speaker Connector (INT_SPKR) 14 Intrusion Switch Connector
(INTRUDER)
6 Buzzer (BEEP) 15 LPC Debug Connector (LPC_DEBUG)
7 Front IO Connector (F_USB_AUDIO) 16 P2 Power Connector(12V_PWRCONN)
8 System Fan Connector (FAN_HDD) 17 Processor Connector (N/A)
9 Mini-PCI Socket (PCIE_MINICARD) 18 Battery Connector (BATTERY)
USFF System Board Components
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