DC Power Adapter - 2.5mm ID 5.5mm OD Male to 2.1mm ID 5.5mm OD Female

This item is subject to a 15% tariff surcharge
Male to Female | Durable | Plastic Handle | Change Connector Size
100% of 100
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1-4 5-9 10-49 50-99 100+
$1.77 $1.52 $1.42 $1.34 $1.25

Direct current (DC) power adapters are the perfect way to change from one size DC connector to another. These are most commonly used when you have a new or updated security system but dont want to run new power. Typically you would have to buy different power supplies with the proper power cable attached to fit your needs. These adapters are a cost effective way to convert from one size to another without compromising electrical performance.


  • Connector A: Male
    • Inner Diameter (ID): 2.5mm
    • Outer Diameter (OD): 5.5mm
  • Connector B: Female
    • Inner Diameter (ID): 2.1mm
    • Outer Diameter (OD): 5.5mm
  • Durable construction
  • Plastic handle
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Tariff Percentage 15%
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Proposition 65

WARNING: This product can expose you to chemicals including phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov


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Q: What is a DC connector?

A: A DC (Direct Current) is an electrical connector used for DC power

Q: What are some other names for these connectors?

A: Sometimes they are referred to as coaxial power connectors barrel connectors or tip connectors.

Q: What are DC power connectors commonly used for?

A: DC power connectors are primarily used for electronic devices such as laptop computers radar detectors small televisions and many other portable devices.

Q: What is the most common size of DC connector?

The most common sizes are 2.1mm and 2.5mm. You should always check with the manufacturer of the electronic device to be certain.

Q: How can I tell the difference between a male and a female DC connector?

The male protrudes outward with a pin. The female side surrounds this pin to make contact.