Name: 0H790K Dell 255-Watt ATX12V 24 Pin Power Supply for OptiPlex 390 790 990
Brand: Dell
SKU: 0H790K
Price: 97.00 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Dell 255-Watts ATX12V 24 Pin Power Supply provides a steady source of power specifically tailored for OptiPlex 390, 790, and 990 desktop systems. It fits comfortably inside standard chassis and supports the power requirements needed for typical office and light computing tasks.

General Information
Brand	Dell
Part Number	0H790K
Product Type	Desktop Power Supply
Condition	Refurbished

Technical Information
Input Voltage	100-240V AC
Input Frequency	50/60 Hz
Output	+12V, +5V, +3.3V, -12V
Max. Output Power	255W
Hot Swappable	No
Redundant Support	No
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Single 12V Rail
Number of Fans	1

Compatibility
Form Factor	Proprietary
Compatible For	OptiPlex 390, OptiPlex 790, OptiPlex 990

Connectors
Connector Types	24-pin ATX, 4-pin CPU, 6-pin PCIe, SATA, Molex

Physical Characteristics
Weight	3.00

Certifications and Environmental
Compliance Standards	RoHS, CE, FCC, UL, cULus

Product Description
This 255-watt power supply is built to provide steady and efficient power to Dell OptiPlex 390, 790, and 990 desktops. It converts AC power into usable DC power that the computer's components rely on to operate smoothly. Commonly found in office environments, schools, and small business setups, this unit is designed specifically for these Dell models to ensure a perfect fit and proper power specifications. IT professionals and technicians often use this PSU for replacement or repair tasks to maintain system stability. Key Features Designed to fit Dell OptiPlex 390, 790, and 990 chassis without modification 24-pin ATX connector supports motherboard power requirements precisely 255 watts of continuous power suitable for typical office workloads Standard cooling fan keeps system temperatures in check during operation Includes necessary cables to connect seamlessly with system components You'll typically see this power supply deployed in desktops used for everyday tasks such as word processing, web browsing, and basic multimedia. It helps keep business operations running smoothly by ensuring the system has consistent and reliable power.

Use Cases
The 0H790K Dell 255-Watt ATX12V 24 Pin Power Supply is primarily utilized in business desktop environments where reliability and consistent power delivery are critical. It is well-suited for office workstations, small business IT setups, and institutional deployments utilizing Dell OptiPlex 390, 790, and 990 models. How It's Used: Powering standard office desktops running productivity applications in SMB environments requiring stable uptime. Supporting IT departments in educational institutions deploying multiple OptiPlex units for administrative and classroom tasks. Enabling remote or branch offices to maintain consistent desktop performance with reliable power sources. Providing robust power in government and public sector workstations where maintenance continuity is essential. Facilitating light virtualization workloads on OptiPlex systems within departmental server clusters. This power supply unit ensures operational stability by delivering consistent power tailored for Dell OptiPlex systems, which contributes to minimizing downtime and supporting scalability in typical office computing environments.