Name: H255ES-00 Dell 255W Power Supply for OptiPlex 3020 9020 7020 Precision T1700
Brand: Dell
SKU: H255ES-00
Price: 127.57 USD
Availability: InStock
Rating: 4.8 (130 reviews)

Product Overview
The Dell 255-Watts Power Supply supports several Dell desktop models by supplying steady power needed for daily computing tasks. It fits inside specific Optiplex and Precision desktops and is often used as a replacement part during maintenance or upgrades. Its design helps ensure that the computer hardware receives appropriate voltage and current, keeping systems stable and ready for work.

General Information
Brand	Dell
Part Number	H255ES-00
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,+5VSB
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	Dell OptiPlex 3020,Dell OptiPlex 7020,Dell OptiPlex 9020,Dell Precision T1700

Connectors
Connector Types	24-pin ATX, 8-pin CPU, 6+2-pin PCIe, SATA, Molex

Physical Characteristics
Weight	3.00

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

Product Description
This 255-watt power supply is built to provide dependable power to several Dell desktop systems, including the Optiplex 3020, 9020, 7020, and Precision T1700 series. Often found in office environments and professional workstations, it is designed to keep these machines running smoothly without interruptions caused by power fluctuations. Technicians and IT departments typically use this unit when replacing or upgrading internal power components, ensuring the systems maintain their original power specifications. It’s a practical choice for those who need to service Dell desktops and want a direct replacement part that matches factory standards. Key Features Supports Dell Optiplex and Precision series desktops requiring 255W power supply capacity Maintains voltage stability to protect internal components Engineered to match original equipment manufacturer (OEM) specifications Includes standard connectors compatible with targeted Dell models Compact form factor optimizes space inside desktop chassis This power supply is typically installed within corporate or home office Dell systems where consistent power delivery is essential. By replacing faulty or aging units, it helps extend the operational life of the desktops without needing a complete system replacement. The unit’s compatibility and performance make it a reliable component for maintaining Dell workstations in everyday use.

Use Cases
The Dell 255W Power Supply is primarily utilized within enterprise and SMB desktop environments that deploy Dell Optiplex 3020, 9020, 7020, and Precision T1700 systems. It serves IT administrators and support teams responsible for maintaining power stability in office workstations and specialized computing setups. How It's Used: Replacements in corporate IT departments to restore power supply functionality in Optiplex and Precision desktop fleets. Support for remote office workstations requiring reliable power for daily business applications and virtual desktop operations. Integration into small server rooms or edge computing nodes where these desktop models handle localized data processing. Upgrades in educational institution computer labs to ensure consistent performance during heavy multi-user workloads. Deployment in professional workstations that perform CAD, data analysis, or content creation, leveraging stable power delivery for demanding tasks. By providing consistent and efficient power delivery, this power supply helps maintain operational uptime and system reliability in environments that depend on these Dell desktop platforms. Its compatibility and design streamline hardware lifecycle management and support scalability in managed IT infrastructures.