--- product_id: 191145891 title: "Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs)" brand: "mr.power" price: "β‚©22472" currency: KRW in_stock: true reviews_count: 13 category: "Mr.Power" url: https://www.desertcart.kr/products/191145891-mr-power-reverse-polarity-converter-cable-5-5-x-2 store_origin: KR region: South Korea --- # Fits keyboards & guitar pedals Reverse polarity conversion 5.5x2.1mm jack size Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs) **Brand:** mr.power **Price:** β‚©22472 **Availability:** βœ… In Stock ## Summary > πŸ”„ Power your gear your way β€” never get stuck without the right polarity again! ## Quick Answers - **What is this?** Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs) by mr.power - **How much does it cost?** β‚©22472 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/191145891-mr-power-reverse-polarity-converter-cable-5-5-x-2) ## Best For - mr.power enthusiasts ## Why This Product - Trusted mr.power brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Dual Pack Value:** Two cables included to power multiple devices or keep a spare on hand. - β€’ **Compact & Convenient:** 173mm length fits perfectly in tight setups without cable clutter. - β€’ **Plug & Play Simplicity:** Male-to-female coaxial connectors make setup effortlessβ€”no tech headaches. - β€’ **Universal Compatibility:** Seamlessly adapt standard power supplies to nonstandard devices like Casio keyboards and guitar pedals. - β€’ **Reliable Power Conversion:** Reverse polarity function protects your gear and ensures perfect power flow every time. ## Overview The Mr.Power Reverse Polarity Converter Cable (5.5 x 2.1mm) is a compact, reliable solution designed to convert power polarity for keyboards, guitar effect pedals, and other low-voltage devices. With a 173mm length and male-to-female coaxial connectors, this dual-pack cable ensures compatibility with nonstandard electronics, saving you from costly proprietary cords and keeping your setup running smoothly. ## Description desertcart.com: Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs) : Musical Instruments Review: Use a standard power supply with nonstandard electronics - Needed this for a Casio keyboard, bought in a thrift shop with no power cord. I have lots of 'em with the right voltage, but Casio uses a nonstandard polarity (presumably to make us buy their proprietary power cord). This adapter changed my standard polarity cord to fit their keyboard. Worked great and saved me $20! Review: Works to reverse polarity on cameras - Worked great with Panasonic convertible cameras ## Features - One male plug and one female plug - Reverse Polarity what you want, fit for keyboard and guitar effect pedal - Jack Size: 5.5mmx2.1mm - Length: 173mm - 2pc Effect Pedal Cable ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07YJKJY7C | | Best Sellers Rank | #7,325 in Musical Instruments ( See Top 100 in Musical Instruments ) #220 in Instrument Cables | | Brand Name | Mr.Power | | Cable Type | Coaxial | | Color | Black | | Compatible Devices | PC | | Connector Gender | Male-to-Female | | Connector Type | Male-to-female | | Customer Package Type | sealed anti-static bag | | Customer Reviews | 4.6 4.6 out of 5 stars (377) | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Manufacturer | Mr.Power | | Model | MP-RPC-5521-2 | | Number of Items | 2 | | Number of Pins | 2 | | Other Special Features of the Product | Low Voltage | | Outer Material | Plastic | | Recommended Uses For Product | Connecting guitar effect pedals to amplifiers or keyboards to power supplies | | Unit Count | 1 Count | ## Product Details - **Brand:** Mr.Power - **Cable Type:** Coaxial - **Compatible Devices:** PC - **Connector Type:** Male-to-female - **Special Feature:** Low Voltage ## Images ![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs) - Image 1](https://m.media-amazon.com/images/I/41Ke6H0swzS.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Questions & Answers **Q: Does it work with 9 volts** A: I use it for 9 volts. Works great! **Q: Is this cable also the right size for 12Volt battery pack?** A: The plug size is 5.5 x 2.1mm. If your device has the same plug size, it can fit for. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Use a standard power supply with nonstandard electronics *by K***Z on February 4, 2026* Needed this for a Casio keyboard, bought in a thrift shop with no power cord. I have lots of 'em with the right voltage, but Casio uses a nonstandard polarity (presumably to make us buy their proprietary power cord). This adapter changed my standard polarity cord to fit their keyboard. Worked great and saved me $20! ### ⭐⭐⭐⭐⭐ Works to reverse polarity on cameras *by C***S on November 2, 2025* Worked great with Panasonic convertible cameras ### ⭐⭐⭐⭐⭐ Simple fix to adapt 9V guitar pedal power supply for use with positive center pin device *by S***V on November 25, 2025* Used this to adapt a standard guitar pedal power supply to work with a KAT drum pad that has a positive center pin connection. Simple and inexpensive fix to replace old PS that died. Easier and cleaner than rewiring the pedal supply connector. ## Frequently Bought Together - Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (2 pcs) - DROK USB to 9v, 5v to 12v Step Up, USB Cable DC 5V Boost to 9V 12V Voltage Converter 1A Step-up Volt Transformer Power Regulator Line with LED Display - iGreely DC 5V to DC 9V USB Voltage Step Up Converter Cable 3.3ft/1m Power Supply Adapter Cable with DC Jack 5.5 x 2.5mm or 5.5 x 2.1mm, for Fan, Led Light, Wireless Router, Speakers and More Devices --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/191145891-mr-power-reverse-polarity-converter-cable-5-5-x-2](https://www.desertcart.kr/products/191145891-mr-power-reverse-polarity-converter-cable-5-5-x-2) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-05-24*