BiXPower C6 DC Power Connector Adapter – 5.5 x 2.5mm Female to 6.5 x 4.5mm Male with Center Pin
The BiXPower C6 (CNT-C6) is a compact DC power connector adapter designed to convert a standard 5.5mm x 2.5mm male DC barrel plug into a 6.5mm x 4.5mm male connector with center pin.
This convenient connector tip allows a compatible DC power adapter, rechargeable battery, or power cable to connect to equipment requiring a 6.5 x 4.5mm DC power input with center pin, including certain older Sony VAIO, Fujitsu, Panasonic Toughbook, and other laptop models.
6.5 x 4.5mm Male Output
Center Pin
5.5 x 2.5mm Female Input
Compact Design
No Voltage Conversion
Product Overview

BiXPower CNT-C6 DC power connector adapter
Different laptop computers and DC-powered devices use different power connector sizes. The BiXPower C6 adapter provides a simple solution when your existing power source uses a 5.5 x 2.5mm male connector, but your equipment requires a larger 6.5 x 4.5mm male connector with center pin.
The C6 is a passive connector adapter. It changes the physical connector interface without changing the supplied voltage.
Key Features and Benefits
- Connector conversion: Converts a 5.5 x 2.5mm male DC power plug to a 6.5 x 4.5mm male connector.
- Center-pin design: Includes the center pin required by compatible equipment.
- Easy installation: Connects directly to an existing compatible 5.5 x 2.5mm DC power plug.
- Compact design: Small connector adapter requires no cable cutting or soldering.
- Multiple applications: Suitable for compatible laptop computers, DC power adapters, and rechargeable battery systems.
- Reusable accessory: Allows compatible power supplies to be used with equipment requiring this specific connector size.
Technical Specifications
| Model |
BiXPower CNT-C6 |
| Product Type |
DC power connector adapter tip |
| Input Connector |
5.5mm outside diameter x 2.5mm inside diameter female DC jack |
| Output Connector |
6.5mm outside diameter x 4.5mm inside diameter male DC plug |
| Center Pin |
Yes |
| Voltage Conversion |
None – passive connector adapter |
| Compatible Power Source |
DC power adapter, rechargeable battery, or DC cable with a compatible 5.5 x 2.5mm male plug |
| Electrical Requirements |
Power source voltage, polarity, and current capacity must match the connected equipment. |
| Package Contents |
1 x BiXPower C6 DC power connector adapter |
Detailed Product Images

Male output connector with center pin

C6 connector side view

Connector details and dimensions

Female input connector detail
How to Use the C6 Connector Adapter
The C6 connector attaches to an existing 5.5 x 2.5mm male DC power plug to provide a 6.5 x 4.5mm male output connector with center pin.
- Check your power source: Confirm your existing power cable has a 5.5 x 2.5mm male DC connector.
- Check your equipment: Confirm the device requires a 6.5 x 4.5mm male connector with center pin.
- Verify electrical compatibility: Make sure your power source provides the correct voltage, polarity, and sufficient current.
- Attach the adapter: Insert your 5.5 x 2.5mm male power plug into the female jack on the C6 adapter.
- Connect your equipment: Insert the C6 male connector into the compatible device power input.
Connection Direction
5.5 x 2.5mm Male Power Plug
↓
C6 Female Input
↓
6.5 x 4.5mm Male Output with Center Pin
↓
Compatible Device

If you are using a universal rechargeable battery or universal power adapter, first install its standard 5.5 x 2.5mm male connector tip on the output cable. Then attach the C6 adapter to that connector.
Compatible Laptop Computers
The C6 connector may be suitable for certain older laptop models that use a 6.5 x 4.5mm male DC power connector with center pin.
Examples of Previously Listed Laptop Families
- Sony VAIO: Selected PCG and VGN laptop series.
- Fujitsu: Selected LifeBook, FMV-BIBLO, LOOX, and Stylistic models.
- Panasonic Toughbook: Selected older CF-series laptop models.
- Samsung: Selected older Sens and Sens Pro laptop models.
- Dell: Selected older Latitude models.
- Other: Certain older Hitachi and Megaimage laptop models.
These are historical compatibility references and are not guaranteed fitment confirmations. Some laptop families have multiple versions with different connector sizes and electrical requirements.
Before ordering, compare the actual connector dimensions, center-pin configuration, voltage, and polarity with your equipment.
Understanding the Connector Dimensions
The C6 male connector has two important barrel dimensions:
- 6.5mm Outside Diameter (OD): The outside width of the male connector barrel.
- 4.5mm Inside Diameter (ID): The inside opening diameter of the male connector barrel.
- Center Pin: A metal pin positioned inside the connector opening.
The female input on the opposite end accepts a standard 5.5mm outside diameter x 2.5mm inside diameter male DC power plug.
Important: Connector Adapter Only – No Voltage Conversion
The BiXPower C6 changes the physical connector size only. It does not increase, decrease, regulate, or otherwise convert DC voltage.
Always confirm that your battery or power adapter provides the correct voltage, polarity, and sufficient current for your equipment.
Do not use this adapter if your original power connector is not 5.5 x 2.5mm.
The presence of a center pin does not guarantee compatibility with every laptop. Some equipment uses additional identification or communication functions through the center contact.
Frequently Asked Questions
What does the C6 connector convert?
It converts a 5.5 x 2.5mm male DC power plug into a 6.5 x 4.5mm male DC connector with center pin.
Does the C6 adapter change voltage?
No. The C6 is a passive connector adapter. Your power source must already provide the correct voltage required by your equipment.
Can I use the C6 with a rechargeable battery?
Yes, if the battery output cable has a compatible 5.5 x 2.5mm male plug and provides the correct voltage, polarity, and current capacity for the connected device.
Will the C6 work with every Sony VAIO laptop?
No. Sony VAIO laptops use different power connector sizes depending on the model and production generation. Always verify the exact connector dimensions and electrical requirements.
What is the purpose of the center pin?
The center pin is part of the connector design used by compatible equipment. Depending on the device, it may serve an electrical contact or identification function. Physical fit alone does not guarantee compatibility.
Can I connect a 5.5 x 2.1mm plug to the C6?
The C6 female input is designed for a 5.5 x 2.5mm male plug. A 5.5 x 2.1mm plug is not the specified input size and may produce an unreliable connection.
Does the package include a power adapter or battery?
No. The package includes one C6 connector adapter only. Power adapters, batteries, and cables are sold separately.
Package Contents
1 x BiXPower C6 DC Power Connector Adapter (CNT-C6)
BiXPower provides rechargeable battery solutions, DC power adapters, power cables, and connector accessories for portable and professional electronic equipment.