> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 30 Piece 5.5 / 2.1mm to DC Barrel Jack Adapter Kit

**Type:** Product page · **SKU:** ADA5474 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/30-piece-55-21mm-to-dc-barrel-jack-adapter-kit.html ([markdown](https://core-electronics.com.au/30-piece-55-21mm-to-dc-barrel-jack-adapter-kit.html.md))

We have a lot of power adapter packs in the shop - from 9V to 12V to 5V we even have an adjustable power supply like one of these. But all of them will...

## Pricing

- **Price:** $33.95 (inc GST) — $30.86 AUD, exc GST
- **Quantity discounts:** 10+ $29.94 (exc GST) · 50+ $29.32 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today; more stock is typically available with a 8–12 day lead time.

## How to buy

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- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

Adafruit have a lot of [power adapter packs](https://core-electronics.com.au/power-batteries/plugpacks.html) in the shop - from [9V](https://core-electronics.com.au/9-vdc-1000ma-regulated-switching-power-adapter-ul-listed.html) to [12V](https://core-electronics.com.au/12v-5a-switching-power-supply.html) to [5V](https://core-electronics.com.au/5v-10a-switching-power-supply.html) Adafruit even have an [adjustable power supply](https://core-electronics.com.au/5-15v-dc-3a-adjustable-appliance-powerpack.html) like one of these. But all of them will come with the same standard 5.5mm / 2.1mm DC barrel jack that is most common on many devices.

What if you'd like to power something different, say some old synthesizer or a laptop or some other whats-it? Basically, something that decided 5.5/2.1mm is not available? Here's a handy adapter kit for switching out barrel jack connectors.

You get thirty (30!) different barrel jack plug adapters in a wide variety of diameters. Each one plugs in smoothly into a 5.5mm/2.1mm DC jack and provides a different sized tip. There's no voltage translation done here, so you'll need to make sure that the device you're powering is expecting the voltage and current capability of the supply.

Great for use with any of our [wall wart powered adapters](https://core-electronics.com.au/power-batteries/plugpacks.html), [USB Type C to DC cables](https://core-electronics.com.au/usb-type-c-31-pd-to-55mm-barrel-jack-cable-9v-5a-output-12m-long-with-e-mark.html), [AA battery packs](https://core-electronics.com.au/search?q=AA+battery+2.1mm), or [USB booster cables](https://core-electronics.com.au/search?q=usb+booster). Please note that the tips do not change the polarity: if you have a center positive DC adapter (as almost all are) the tips will also be 'center positive'!

**Includes:**

1. 2.0x0.5mm
2. 3.5x1.1mm
3. 2.35mm
4. 2.5mm
5. 2.5mm (phono jack)
6. 3.5mm (phono jack)
7. 3.0x1.1mm
8. 4.8mm
9. 3.5x1.2mm
10. 4.0x1.7mm (inner spring tip)
11. 4.8x1.7mm (inner spring tip)
12. 5.0mm
13. 5.5x2.5mm
14. 5.5x2.1mm (inner spring tip)
15. 7.9mm (Lenovo Laptop - Round Type)
16. 7.4mm
17. Dell Laptop - Three Contact Type (Latitude C840, Inspiron 3700, Inspiron 3800, Inspiron 8000, Inspiron 1100, Inspiron 5100, etc)
18. 5.5x1.9mm
19. 6.0mm (with center contact pin)
20. 6.3mm
21. 5.5x2.5mm
22. 5.5x2.5 (inner spring tip)
23. 5.5x2.1mm
24. 5.5x2.1mm (inner spring tip)
25. 5.5x1.5mm
26. 5.5x1.7mm (inner spring tip)
27. 5.0x2.1mm
28. 5.0x2.5mm
29. 4.5mm
30. Lenovo Laptop - Large Rectangular Type

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/A/D/ADA5474-1.jpg)