--- product_id: 40323108 title: "DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US)" brand: "smakn" price: "$4.78" currency: USD in_stock: false url: https://www.desertcart.us/products/40323108-dc-5v-4a-20w-switching-power-supply-adapter-100-240 store_origin: US region: United States of America --- # 20W max power output 5V 4A stable DC output Universal 100-240V AC input DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) **Brand:** smakn **Price:** $4.78 **Availability:** ❌ Out of Stock ## Summary > ⚡ Power your productivity with SMAKN — the adapter that never quits! ## Quick Answers - **What is this?** DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) by smakn - **How much does it cost?** $4.78 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/40323108-dc-5v-4a-20w-switching-power-supply-adapter-100-240) ## Best For - smakn enthusiasts ## Why This Product - Trusted smakn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit:** Designed with a 2.5mm x 5.5mm connector and inside positive polarity for perfect device compatibility. - • **Trusted Replacement:** A cost-effective, high-quality alternative to OEM adapters, trusted by tech enthusiasts and vintage computer fans alike. - • **Global Compatibility:** Works seamlessly worldwide with a wide 100-240V AC input range—travel-ready and versatile. - • **Compact & Lightweight:** Weighs just 5 ounces with a sleek design, making it easy to carry and integrate into any workspace. - • **Power-packed Performance:** Delivers a reliable 20W output to keep your devices running smoothly without interruption. ## Overview The SMAKN DC 5V/4A 20W Switching Power Supply Adapter offers a robust and reliable power solution compatible with most 5V 4A or lower devices. Featuring a universal 100-240V AC input and a precise 2.5mm x 5.5mm connector with inside positive polarity, it serves as a perfect OEM replacement at a fraction of the cost. Lightweight and compact, it’s ideal for professionals and tech enthusiasts seeking dependable performance worldwide. ## Description Compatible with most devices that use a 5V 4A or lower amperage 2.5mm x 5.5mm (Inner diameter x Outer diameter) with inside positive polarity Input: 100-240V~0.6A, 50/60Hz / Output: 5V 4000mA 20W Max ## Features - Compatible with most devices that use a 5V 4A or lower amperage - 2.5mm x 5.5mm (Inner diameter x Outer diameter) with inside positive polarity - Input: 100-240V~0.6A, 50/60Hz / Output: 5V 4000mA 20W Max ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N4HYWAM | | Amperage | 4 Amps | | Brand | SMAKN | | Compatible Devices | adapter | | Connectivity Technology | DC Barrel | | Connector Type | 2.5mm | | Current Rating | 4 Amps | | Customer Package Type | Standard Packaging | | Customer Reviews | 4.6 4.6 out of 5 stars (644) | | Frequency Range | 60 hertz | | Input Voltage | 240 Volts | | Main Power Connector Type | 2 Pin | | Manufacturer | SMAKN | | Mfr Part Number | 4330194421 | | Model Number | 4330194421 | | Mounting Type | Wall Mount | | Number of Items | 1 | | Number of Power Levels | 1 | | Output Current | 4 Amps | | Output Voltage | 5 Volts | | Portable | No | | Power Plug | Type A - 2 pin (North American) | | Power Source | AC | | UPC | 710185283647 | | Unit Count | 1.0 Count | | Voltage | 5 Volts | | Wattage | 20 watts | ## Product Details - **Amperage:** 4 Amps - **Brand:** SMAKN - **Compatible Devices:** adapter - **Connector Type:** 2.5mm - **Input Voltage:** 240 Volts - **Number of Items:** 1 - **Output Current:** 4 Amps - **Output Voltage:** 5 Volts - **Power Source:** AC - **Wattage:** 20 watts ## Images ![DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) - Image 1](https://m.media-amazon.com/images/I/61xZ4vanTsL.jpg) ![DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) - Image 2](https://m.media-amazon.com/images/I/71rSQMFA75L.jpg) ![DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) - Image 3](https://m.media-amazon.com/images/I/61C-IYvcMGL.jpg) ![DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) - Image 4](https://m.media-amazon.com/images/I/51s58zxEcWL.jpg) ## Questions & Answers **Q: Can i use this to power nvidia jetson nano** A: This is what you do! You check your old power supply and look at the Voltage which is 5 and next to it is the important value How many amps 1A 2A 3A 4A etc. The SMAKN supply replaces anything up to 4A. If the power supply plug is not the same, you can clip your old power supply plug off and solder it to the new one. There is always a neighbor that will help you solder it if you don't know how. **Q: Is it 2.5mm x 5.5mm (Inner diameter x Outer diameter) with inside positive polarity ? I would expect standard 2.1mm x 5.5mm, let me know** A: This is a compatible project: 5.5 * 2.5 and 5.5 * 2.1 Internal positive external negative **Q: Will this work fine with Raspberry Pi 3 and 4?** A: Yes, the SMAKN 5V/4 Amp 20 Watt Power supply will work with the Raspberry Pi line of devices. Please note that the Raspberry Pi 4 Model does "Only" has a USB-C type power jack. You would need to get a Adapter/Gender Changer for the 2.5/5.5 MM Barrel Jack for the connector that comes with the SMAKN Power Supply. Just search for USB-C Male to 2.5/5.5 Female Adapter or Gender Changer. Thank you Robert Tonkavich **Q: What is the warranty period for this item?** A: One year warranty (free replacement) ## Frequently Bought Together - SMAKN DC 5V/4A 20W Switching Power Supply Adapter 100-240 Ac(US) - Waveshare AC8265 Wireless NIC Module for Jetson Orin Nano/NX Supports 2.4GHz / 5GHz Dual Band WiFi and Bluetoth 4.2 - Yahboom Acrylic Case for NVIDIA Jetson Nano Compatible with 4GB (B01 & A02) & 2GB with Cooling Fan and Camera Case --- ## 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.us/products/40323108-dc-5v-4a-20w-switching-power-supply-adapter-100-240](https://www.desertcart.us/products/40323108-dc-5v-4a-20w-switching-power-supply-adapter-100-240) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-26*