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

Product ID: 5474
Qty Discount
1-9 $10.95
10-99 $9.86
100+ $8.76


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 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,  USB Type C to DC cables, AA battery packs, or USB booster cables. 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'!


  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

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Technical Details