Dell OptiPlex 790
Information on Features and Setup
About Warnings
WARNING: WARNING indicates potential for property damage, personal injury, or death.
Mini-Tower - Front and Back View
Figure 1. Front and Back View of Mini-Tower
1. Power button, power light
2. Optical drive bay (optional)
3. Headphone connector
4. Microphone connector
5. Diagnostic lights (4)
6. Optical drive (optional)
7. Optical drive release button
8. USB 2.0 connector (4)
9. Drive activity light
10. Power supply diagnostic light
11. Power supply diagnostic button
12. Power connector
13. Back panel connector
14. Expansion card slot (4)
15. Security cable slot
16. Locking ring
Desktop - Front and Back View
Figure 2. Front and Back View of Desktop
1. Optical drive
2. Optical drive release button
3. Power button, power light
4. USB 2.0 connector (4)
5. Microphone connector
6. Headphone connector
7. Drive activity light
8. Diagnostic light (4)
9. Locking ring
10. Security cable slot
11. Power connector
12. Back panel connector
13. Expansion card slot (4)
14. Power supply diagnostic light
15. Power supply diagnostic button
Small Form Factor - Front and Back View
Figure 3. Front and Back View of Small Form Factor
1. Optical drive
2. Optical drive release button
3. Power button, power light
4. USB 2.0 connector (4)
5. Microphone connector
6. Headphone connector
7. Diagnostic light (4)
8. Drive activity light
9. Locking ring
10. Security cable slot
11. Power connector
12. Power supply diagnostic button
13. Power supply diagnostic light
14. Back panel connector
15. Expansion card slot (2)
Ultra Small Form Factor - Front and Back View
Figure 4. Front and Back View of Ultra Small Form Factor
1. Optical drive
2. Optical drive release button
3. Power button, power light
4. Drive activity light
5. Diagnostic light (4)
6. Headphone connector
7. Microphone connector
8. USB 2.0 connector (2)
9. Wi-Fi antenna (optional)
10. Network activity light
11. Retention screw
12. Locking ring
13. Security cable slot
14. Power connector
15. Cable output connector
16. Input/microphone cable connector
17. DisplayPort connector
18. VGA connector
19. Serial connector
20. USB 2.0 connector (5)
21. Network connector
22. Link integrity light
Mini-Tower and Desktop - Back Panel
Figure 5. Back Panel View of Mini-Tower and Desktop
1. Mouse connector
2. Link integrity light
3. Network connector
4. Network activity light
5. Serial connector
6. Cable output connector
7. Keyboard connector
8. USB 2.0 connector (6)
9. DisplayPort connector
10. VGA connector
11. Input/microphone cable connector
Small Form Factor - Back Panel
Figure 6. Back Panel View of Small Form Factor
1. Mouse connector
2. Serial connector
3. Link integrity light
4. Network connector
5. Network activity light
6. Cable output connector
7. Keyboard connector
8. DisplayPort connector
9. VGA connector
10. USB 2.0 connector (6)
11. Input/microphone cable connector
Quick Setup
WARNING: Before starting the procedures in this section, read the safety information that came with your computer. For additional information on best practices, visit www.dell.com/regulatory_compliance.
NOTE: Some accessories may not be available if you did not order them.
1. Connect the monitor using one of the following cables:
Figure 7. DVI Cable
Figure 8. DisplayPort Cable
Figure 9. VGA to DVI Adapter
Figure 10. DVI to DisplayPort Adapter
Figure 11. VGA to DisplayPort Adapter
2. Connect the keyboard or USB mouse (optional).
Figure 12. USB Connection
3. Connect the network cable (optional).
Figure 13. Network Connection
4. Connect the modem (optional).
Figure 14. Modem Connection
5. Connect the power cable.
Figure 15. Connecting Power to the Computer
6. Press the power button on the monitor and the computer.
Figure 16. Powering On
Specifications
NOTE: The following specifications are only those required by law to be shipped with your computer. For a complete and up-to-date list of specifications for your computer, visit support.dell.com.
System Information
| Component | Details |
|---|---|
| Chipset | Intel 6 Series Express Chipset |
| Processor | Intel Core i5, i7 Quad Core |
| Intel Core i3 Dual Core | |
| Intel Pentium Dual Core | |
| Intel Celeron Dual Core | |
| Video Type | Integrated: Intel HD Graphics |
| Discrete: Intel HD Graphics 2000 | |
| Discrete Video | PCI Express x16 graphics adapter |
| Integrated Video Memory | Shared video memory up to 1.7 GB (Microsoft Windows Vista and Windows 7) |
Memory
| Component | Details |
|---|---|
| Memory module connectors | Desktop, Mini-Tower, Small Form Factor: four DIMM slots Ultra Small Form Factor: two DIMM slots |
| Memory module capacity | 1 GB, 2 GB, and 4 GB |
| Type | DDR3 1333 MHz |
| Minimum memory | 1 GB |
| Maximum memory | Desktop, Mini-Tower, Small Form Factor: 16 GB Ultra Small Form Factor: 8 GB |
Drive
| Component | Details |
|---|---|
| Externally accessible drive bays: 5.25-inch | Mini-Tower: two |
| Desktop: one | |
| Small Form Factor: one slim optical drive bay | |
| Ultra Small Form Factor: one slim optical drive bay | |
| Internally accessible drive bays: 3.5-inch SATA | Mini-Tower: two |
| Desktop: one | |
| Small Form Factor: one | |
| Ultra Small Form Factor: none | |
| 2.5-inch SATA drive bays | Mini-Tower: two |
| Desktop: one | |
| Small Form Factor | one |
| Ultra Small Form Factor | one |
Control and Diagnostic Lights
| Light | Description |
|---|---|
| Power button light | Solid blue light indicates the computer is in an active power state; blinking blue indicates the computer is in a sleep state. |
| Drive activity light | Solid yellow light indicates the computer is not booting, indicating a system board or power supply problem. Blinking yellow indicates a system board problem. |
| Diagnostic lights | Blinking blue light indicates the computer is reading data from or writing data to the hard drive. Four lights located on the front panel of the computer. For more information on diagnostic lights, see the Service Manual at support.dell.com/manuals. |
Power
| Component | Details |
|---|---|
| Coin-cell battery | One 3-V CR2032 coin-cell battery |
| Voltage | Mini-Tower: 100 VAC to 240 VAC, 50 Hz to 60 Hz, 5.0 A Desktop: 100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.40 A Small Form Factor: 100 VAC to 240 VAC, 50 Hz to 60 Hz, 3.60 A Ultra Small Form Factor: 100 VAC to 240 VAC, 50 Hz to 60 Hz, 4.00 A Ultra Small Form Factor: 100 VAC to 240 VAC, 50 Hz to 60 Hz, 2.90 A |
| Wattage | Mini-Tower: 265 W Desktop: 250 W Small Form Factor: 240 W Ultra Small Form Factor: 200 W |
| Maximum heat dissipation | Mini-Tower: 1390 BTU/hr Desktop: 1312 BTU/hr Small Form Factor: 1259 BTU/hr Ultra Small Form Factor: 758 BTU/hr |
NOTE: Heat dissipation is calculated using the wattage rating of the power supply.
NOTE: See the safety information that came with your computer for important information about voltage settings.
Physical
| Dimension | Mini-Tower | Desktop | Small Form Factor | Ultra Small Form Factor |
|---|---|---|---|---|
| Height | 41.70 cm (16.42 in) | 41.00 cm (16.14 in) | 31.20 cm (12.28 in) | 24.00 cm (9.45 in) |
| Width | 17.50 cm (6.89 in) | 10.20 cm (4.01 in) | 9.26 cm (3.65 in) | 6.50 cm (2.56 in) |
| Depth | 36.00 cm (14.17 in) | 36.00 cm (14.17 in) | 29.00 cm (11.42 in) | 23.70 cm (9.33 in) |
| Weight (Minimum) | 8.87 kg (19.55 pounds) | 7.56 kg (16.67 pounds) | 5.70 kg (12.57 pounds) | 3.27 kg (7.21 pounds) |
Environmental
| Parameter | Value |
|---|---|
| Temperature: Operating | 10 °C to 35 °C (50 °F to 95 °F) |
| Temperature: Storage | -40 °C to 65 °C (-40 °F to 149 °F) |
| Relative humidity | 20% to 80% (non-condensing) |
| Altitude: Operating | -15.20 m to 3048 m (-50 ft to 10,000 ft) |
| Altitude: Storage | -15.20 m to 10,668 m (-50 ft to 35,000 ft) |
| Airborne contaminant level | G1 or lower as defined by ISA-S71.04-1985 |
Getting More Information
Refer to the safety and regulatory documents that shipped with your computer and visit the regulatory compliance website at www.dell.com/regulatory_compliance for more information regarding:
- Best safety practices
- Regulatory certifications
- Ergonomics
Visit www.dell.com for additional information about:
- Warranty
- Terms and Conditions (U.S. only)
- End User License Agreement
Information in this publication is subject to change without notice.
© 2011 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell™, the DELL logo, Dell Precision™, Precision ON™, ExpressCharge™, Latitude™, Latitude ON™, OptiPlex™, Vostro™, and Wi-Fi Catcher™ are trademarks of Dell Inc. Intel®, Pentium®, Xeon®, Core™, Atom™, Centrino®, and Celeron® are registered trademarks or trademarks of Intel Corporation in the U.S. and other countries. AMD® is a registered trademark and AMD Opteron™, AMD Phenom™, AMD Sempron™, AMD Athlon™, ATI Radeon™, and ATI FirePro™ are trademarks of Advanced Micro Devices, Inc. Microsoft®, Windows®, MS-DOS®, Windows Vista®, the Windows Vista start button, and Office Outlook® are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Blu-ray Disc™ is a trademark owned by the Blu-ray Disc Association (BDA) and licensed for use on discs and players. The Bluetooth® word mark is a registered trademark and owned by the Bluetooth® SIG, Inc. and any use of such mark by Dell Inc. is under license. Wi-Fi® is a registered trademark of Wireless Ethernet Compatibility Alliance, Inc.
Other trademarks and trade names may be used in this publication to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
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