Brand: Dell · SKU: N305N-03 · MPN: N305N-03 · Category: Components

This is a Dell 305W Switching Power Supply, model number N305N-03, often listed as compatible with Dell Dimension E310, E510, E520, E521, and OptiPlex 755, 760, 780, 960 models, and also noted for Optiplex 320. It provides a maximum output power of 305W and supports an AC input voltage range of 100-120V or 200-240V at 50/60Hz. The unit typically features a 24-Pin ATX Connector and includes one fan for cooling. Often sold refurbished or used, it is noted to be a genuine Dell part with an associated MPN of MH495 for some listings. DC Output specifications may include: +5V ==/ 22.0A, -12V ==/ 1.0A, +12VA ==/ 18.0A, +3.3V ==/17.0A, +12VB ==/ 18.0A, +5VFP ==/ 4.0A.
| MPN | MH495, N305N03 |
|---|---|
| Color | Silver |
| Cooling | 1 Fan |
| Form Factor | ATX (Internal) |
| Input Voltage | 100-120V~ / 200-240V~ |
| Main Connector | 24-Pin ATX |
| Maximum Power Output | 305W |
| Warranty | 3-Year Warranty |
| Weight | N/A |
| Dimensions | 150mm x 98mm x 140mm |
A genuine Dell 305W switching power supply unit (PSU) designed as a replacement or upgrade for various Dell desktop systems including Dimension E-series and OptiPlex models. It is rated for 305W maximum output and features standard power connectors for desktop motherboards and peripherals.
Yes, this Dell 305W Switching Power Supply N305N-03 (N305N-03) is 100% genuine Dell hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Dell 305W Switching Power Supply N305N-03 includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the N305N-03.