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Frequently Asked Questions about the Dell OptiPlex 990

The Dell OptiPlex 990 delivers enterprise-class performance in a variety of different form factors. It is designed to get the most productivity out of your workforce and also assist IT with deployment across your entire organization. Peruse eBay for the right one to meet your needs.

Why should you buy a used Dell OptiPlex 990 computer?

The low-cost Dell OptiPlex 990 offers both security and ease of management for organizations that don't necessarily need the latest hardware. To help IT with deployment and management, the Dell OptiPlex 990 provides enough support to get users up and running as quickly as possible from virtual remote desktop control to on-demand desktop streaming. All models of the Dell OptiPlex 990 are Energy Star 5.0 compliant, and some have an additional 90% energy-efficient power supply for a greater return on investment. Although the Dell OptiPlex 990 is no longer in production, you should be aware that used Dell OptiPlex 990 computers may already come with certain customized settings and features installed.

Does the Dell OptiPlex offer different form factors?

Yes, there are four different types of Dell OptiPlex 990 computers based on their size and form factor. They fit within a standard office or business space. Use all the form factors, except the ultra-small, for up to four simultaneous displays at once.

  • Mini-tower: The largest of the four computers, the mini-tower resembles a desktop tower. It features four PCI and PCI Express expansion card slots, two external 5.25-inch bays, and two internal 3.5-inch bays. The power supply unit is 265 watts.
  • Desktop: This Dell OptiPlex 990 resembles a horizontal desktop computer. Apart from the four PCI and PCI Express expansion card slots, it features one external 5.25-inch bay and a single internal 3.5-inch bay. The power supply unit operates at 250 watts.
  • Small form factor: This computer comes in a smaller case that is designed to minimize the overall footprint. It features two PCI Express expansion card slots, an external 5.25-inch bay, and an internal 3.5-inch bay. The power supply unit operates at 240 watts.
  • Ultra small form factor: The smallest of the four computers, this computer has one mini-PCI Express expansion slot, an external 5.25-inch bay, and one internal 2.5-inch bay. The power supply unit operates at 200 watts.
What are some features of the Dell OptiPlex 990?

All four form factors come with the following features:

  • Intel vPro: The vPro includes a suite of different features that help with security and management, including Trusted Execution Technology, Active Management Technology, and Intel's Virtualization Technology.
  • Trusted Platform Module 1.2: The TPM includes a dedicated microcontroller that stores cryptographic keys for the purpose of disk encryption and hardware authentication.
  • Chassis lock slot: A physical lock on the computer that prevents theft.
  • Chassis intrusion switch: Provides a warning to the IT department as soon as a breach occurs in the computer's chassis.
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