---
product_id: 451505874
title: "USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V"
brand: "sqrgreat"
price: "£8.08"
currency: GBP
in_stock: true
reviews_count: 8
category: "Sqrgreat"
url: https://www.desertcart.co.uk/products/451505874-usb-to-9v-adapter-dc-5v-to-dc-9v-step
store_origin: GB
region: United Kingdom
---

# Max current 800mAh for stable power 4.9ft cable length for flexible setup 5V USB input / 9V DC output USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V

**Brand:** sqrgreat
**Price:** £8.08
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up smarter, not harder — your 9V solution in a sleek USB cable!

## Quick Answers

- **What is this?** USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V by sqrgreat
- **How much does it cost?** £8.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/451505874-usb-to-9v-adapter-dc-5v-to-dc-9v-step)

## Best For

- sqrgreat enthusiasts

## Why This Product

- Trusted sqrgreat brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Reach:** 4.9ft cable length gives you the freedom to position your devices exactly where you need them.
- • **Durable Alloy Plug:** Corrosion-resistant connector ensures a stable, long-lasting connection you can trust.
- • **Smart Safety Shield:** Built-in intelligent IC chip guards against overcurrent, overvoltage, overload, and short circuits.
- • **Power Boost On-The-Go:** Step up your 5V USB to 9V DC effortlessly, powering your essentials anywhere.
- • **Universal Compatibility:** Perfect fit for fans, lamps, keyboards, routers, speakers, and more with standard 5.5 x 2.1mm DC jack.

## Overview

The USB to 9V Adapter converts standard 5V USB power to a stable 9V DC output with up to 800mAh current, featuring a 4.9ft cable and a 5.5 x 2.1mm DC jack. Equipped with an upgraded smart IC chip, it offers comprehensive protection against electrical faults, making it ideal for powering a wide range of devices including fans, lamps, keyboards, routers, and speakers. Its corrosion-resistant alloy plug ensures reliable connectivity for both indoor and outdoor use.

## Description

Product description USB to 9V Adapter DC 5v to 9v Step up cable Widely Used Compatible Such as Fan, Table Lamp, Solar Panel, USB Power Pack, Power Adapter, Bluetooth Audio, Wireless Router, Speakers & More that requires for 9V power Saf e & Reliable - Built-in ugraded intelligent IC circuit - Perfect protecetion from over-current, over voltage, overload or short circuit - Can be used to power the router via power bank if power down P roduct Parameters USB Input => 5V 2A DC Output => 9V Max Current => 0.8A The size of the DC Connector => OD: 5.5 mm & ID: 2.1 mm

Review: Adaptador pistola para llenar gomas - No me cargó la pistola de llenar gomas, el conector era muy largo y se pidió para la pistola de aire para llenar gomas, el que utiliza es un poco más corto.
Review: Works great - Great fit

## Features

- USB input 5V, DC output 9V, max current 800mAh, cable length 4.9ft
- USB DC 5V to DC 9V volt cable with Jack 5.5 x 2.1mm, positive (+) tip (refer to the second image), Please check if it fits in the power jack on your devices
- USB to 9V DC convert cable applicable equipment: Fan, Table Lamp, Piano Keyboard, Solar Panel, USB Power Pack, Power Adapter, Bluetooth Audio, Wireless Router, Speakers, also can be used to power the router via power bank if power down
- 5V to 9V usb voltage adapter has built-in upgraded smart IC chip, which provides perfect overcurrent, overvoltage, overload or short circuit protection for your equipment, safe and reliable
- The alloy plug is effectively resistant to oxidation and corrosion, which can bring you a stable connection during use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09YR5W1BX |
| Best Sellers Rank | #4,033 in USB Cables |
| Brand | Sqrgreat |
| Brand Name | Sqrgreat |
| Cable Type | USB |
| Color | Black |
| Compatible Devices | Router, Speaker |
| Compatible Phone Models | No Compatible Phone Models |
| Connector Gender | Male-to-Male |
| Connector Type | USB Type A |
| Customer Package Type | sealed anti-static bag |
| Customer Reviews | 4.0 out of 5 stars 34 Reviews |
| Data Transfer Rate | 0.48 Gigabits Per Second |
| Indoor Outdoor Usage | Indoor, Outdoor |
| Item Shape | Round |
| Item Weight | 0.03 Kilograms |
| Manufacturer | Sqrgreat |
| Maximum Current | 800 Milliamps |
| Maximum Voltage | 9 Volts |
| Model | DC-5V-to-9V |
| Number of Items | 1 |
| Number of Pins | 4 |
| Other Special Features of the Product | Data Transfer |
| Outer Material | Plastic or Rubber |
| Part Number | DC-5V-to-9V |
| Recommended Uses For Product | Fan, table lamp, piano keyboard, solar panel, USB power pack, power adapter, Bluetooth audio, wireless router, speakers, and powering a router via a power bank |
| Special Feature | Data Transfer |
| UPC | 300692032526 |
| Unit Count | 1.0 Count |
| Wattage | 7.2 watts |

## Product Details

- **Brand:** Sqrgreat
- **Cable Type:** USB
- **Compatible Devices:** Router, Speaker
- **Connector Type:** USB Type A
- **Special Feature:** Data Transfer

## Images

![USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V - Image 1](https://m.media-amazon.com/images/I/51YJejOqdVL.jpg)
![USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V - Image 2](https://m.media-amazon.com/images/I/61XmRt+s2-L.jpg)
![USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V - Image 3](https://m.media-amazon.com/images/I/61e4n7T9v-L.jpg)
![USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V - Image 4](https://m.media-amazon.com/images/I/61yPZkDEaCL.jpg)
![USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V - Image 5](https://m.media-amazon.com/images/I/51t86M5bXYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Adaptador pistola para llenar gomas
*by M***Z on May 12, 2026*

No me cargó la pistola de llenar gomas, el conector era muy largo y se pidió para la pistola de aire para llenar gomas, el que utiliza es un poco más corto.

### ⭐⭐⭐⭐⭐ Works great
*by V***R on September 22, 2025*

Great fit

### ⭐ NOT 9V negative center as claimed
*by E***E on November 3, 2025*

NOT 9V negative center as described. The listing says -9V center, the label on the bag says -9V center... But my METER says it is +9V center and none of my pedals will function with this thing. Useless. Buy the SEEHOM version of this converter, it works correctly with -9V on the center. https://www.amazon.com/dp/B0DD77LYG5

## Frequently Bought Together

- Sqrgreat USB to 9V Adapter - DC 5V to DC 9V Step Up Cable Cord with DC Jack 5.5 x 2.1mm for Fan, Table Lamp, Piano Keyboard, Bluetooth Audio, Wireless Router, Speakers & More(4.9ft) DC-5V-to-9V
- iGreely USB Voltage Step Up Converter - DC 5V to 12V, 3ft Cable with DC Jack 5.5 x 2.5mm or 5.5 x 2.1mm

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-01*