DELL™ OPTIPLEX™ 990 TECHNICAL GUIDEBOOK —VERSION 1.4
D ES KT OP C O MPU T ER ( DT) VI EW
FRONT VIEW
1
Optical Drive
2
Optical Drive Eject Button
3
Power Button, Power
Light
4
USB Connectors (4)
BACK PANEL CONNECTORS
1
Mouse Connector
2
Link Integrity Light
3
Network Connector
4
Network Activity Light
5
Serial Connector
6
Line-out Connector
5
Microphone Connector
6
Headphone Connector
7
Drive Activity Light
8
Diagnostic Lights (4)
7
Keyboard Connector
8
USB Connectors (6)
9
DisplayPort Connector
10 VGA Connector
11 Line-in/Microphone
Connector
BACK VIEW
9 Padlock Ring
10 Security Cable Slot
11 Power Connectors
12 Back Panel Connectors
13
Expansion Card Slots(4)
14
Power Supply Diagnostic
Light
15
Power Supply Diagnostic
Button
5