--- product_id: 7285903 title: "Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01)" brand: "dell" price: "S$96" currency: SGD in_stock: true reviews_count: 12 category: "Dell" url: https://www.desertcart.sg/products/7285903-dell-nh493-power-supply-for-dimension-e521-e520-desktop-l305p store_origin: SG region: Singapore --- # 305W reliable power output whisper-quiet fan operation 10 SATA connectors for versatile compatibility Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) **Brand:** dell **Price:** S$96 **Availability:** ✅ In Stock ## Summary > ⚡ Power up quietly, stay productive endlessly. ## Quick Answers - **What is this?** Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) by dell - **How much does it cost?** S$96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/7285903-dell-nh493-power-supply-for-dimension-e521-e520-desktop-l305p) ## Best For - dell enthusiasts ## Why This Product - Trusted dell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Dell Quality:** OEM-grade reliability that keeps your desktop humming smoothly. - • **Silent Operation Mode:** No more distracting fan noise—work and create in peace. - • **Plug & Play Simplicity:** Easy installation with 10 SATA connectors and standard 20+4 pin system bus. - • **Legacy Device Lifesaver:** Extend the life of your trusted Dell Dimension E520/E521 effortlessly. - • **Steady 305W Power Boost:** Keep your legacy Dell running strong with consistent, efficient energy. ## Overview The Dell NH493 is a 305-watt internal power supply designed specifically for Dell Dimension E520/E521 desktops. Featuring a quiet cooling fan and 10 SATA connectors, it ensures stable power delivery and easy installation. Ideal for professionals maintaining legacy systems, it combines OEM reliability with whisper-quiet operation to keep your workstation running smoothly. ## Description 305 WATT, PFC FOR OPT 330/360/740/745/ 745C/755--, POWER SUPPLY; Part Number: NH493; Category: Power Supplies; Subcategory: Power Supply Review: Does not make noise like another one I tried - I'm still running a 2007 Dell Core2Duo machine. Don't laugh. It still does almost everything I want it to from photo editing to audio file editing and MS Office. It of course can't run Windows 11, so I'm stuck on Windows 10 until October 2026 after I pay MS $30 for providing updates for one additional year. So, I wanted to keep this thing running for another two years. But I was already on my 2nd power supply that died. I purchased one a few months ago to "fix it" but it was awful. Made a terrible racket noise from the fan motor. I used it a few months but couldn't stand it any longer. I took a chance and bought this one. It works great and is quiet, just like I wanted. I know there are several marketers selling these PS. All I can tell you is that this one met my expectations precisely. Now I can use this old machine in peace. Very recommended. Review: Power Supply 🔋 - Installation to my CPU was easy as Pie. After completing all components to motherboard. Computer 🖥 comes on and operate proficiently. ## Features - 305 WATT - PFC FOR OPT 330/360/740/745/ 745C/755-- - POWER SUPPLY - Power Supply - Power Supplies ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001R5MNI4 | | Best Sellers Rank | #1,942 in Computer Power Supplies | | Brand | Dell | | Compatible Devices | Personal Computer | | Connector Quantity | 10 | | Connector Type | SATA | | Connector Type Used on Cable | SATA | | Cooling Method | Air | | Customer Reviews | 4.6 out of 5 stars 98 Reviews | | Form Factor | Internal | | Global Trade Identification Number | 05704327684756 | | Item Dimensions | 1.1 x 9.7 x 6.5 inches | | Item Weight | 3.3 Pounds | | Manufacturer | DELL | | Maximum Input Voltage | 120 Volts (AC) | | Mfr Part Number | NH493 | | Minimum Input Voltage | 110 Volts (AC) | | Model Name | nh493 | | Model Number | NH493 | | Number of Fans | 1 | | Output Wattage | 305 Watts | | System Bus Connector Type | 20+4 Pin | | Wattage | 305.00 | ## Product Details - **Model Name:** nh493 - **Brand:** Dell - **Compatible Devices:** Personal Computer - **Connector Type:** SATA - **Output Wattage:** 305 Watts - **Form Factor:** Internal - **Wattage:** 305.00 - **Cooling Method:** Air - **Item dimensions L x W x H:** 1.1 x 9.7 x 6.5 inches - **Item Weight:** 2.2 Pounds ## Images ![Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Image 1](https://m.media-amazon.com/images/I/81q4tW625KL.jpg) ![Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Image 2](https://m.media-amazon.com/images/I/71xpYaT+ZRL.jpg) ![Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Image 3](https://m.media-amazon.com/images/I/81zLqTxG6mL.jpg) ![Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Image 4](https://m.media-amazon.com/images/I/713Y+wX6LpL.jpg) ![Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Image 5](https://m.media-amazon.com/images/I/81O0RiYfXlL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does not make noise like another one I tried *by R***N on December 14, 2024* I'm still running a 2007 Dell Core2Duo machine. Don't laugh. It still does almost everything I want it to from photo editing to audio file editing and MS Office. It of course can't run Windows 11, so I'm stuck on Windows 10 until October 2026 after I pay MS $30 for providing updates for one additional year. So, I wanted to keep this thing running for another two years. But I was already on my 2nd power supply that died. I purchased one a few months ago to "fix it" but it was awful. Made a terrible racket noise from the fan motor. I used it a few months but couldn't stand it any longer. I took a chance and bought this one. It works great and is quiet, just like I wanted. I know there are several marketers selling these PS. All I can tell you is that this one met my expectations precisely. Now I can use this old machine in peace. Very recommended. ### ⭐⭐⭐⭐⭐ Power Supply 🔋 *by W***Y on June 8, 2024* Installation to my CPU was easy as Pie. After completing all components to motherboard. Computer 🖥 comes on and operate proficiently. ### ⭐⭐⭐⭐⭐ Make sure to tag all the connections *by G***S on March 7, 2025* The power supply fit perfectly into my systems unit. The cables were the appropriate length, Removal and replacement took me about 10 minutes. ## Frequently Bought Together - Dell NH493 Power Supply for Dimension E521/E520 Desktop (L305P-01) - Dell Dock WD19S USB-C 180W Power Delivery - Dell Optical Mouse MS116 (275-BBCB) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/7285903-dell-nh493-power-supply-for-dimension-e521-e520-desktop-l305p](https://www.desertcart.sg/products/7285903-dell-nh493-power-supply-for-dimension-e521-e520-desktop-l305p) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-12*