DC Barrel Plug Adapter, 2.1mm x 5.5mm Female to 5.0mm x 7.4mm Male with Center Pin, 18 AWG | RC-X741
DC Barrel Plug Adapter: 2.1mm x 5.5mm Female to 5.0mm x 7.4mm Male with Center Pin
Part RC-X741 accepts a power supply's 2.1mm x 5.5mm male barrel plug and provides a 5.0mm x 7.4mm straight male barrel plug with a center pin. Its compact pigtail uses 18 AWG wire and a 3-inch cable for connector-size adaptation without cutting or soldering.
Important compatibility check: Matching connector dimensions does not establish electrical or charging compatibility. Verify DC voltage, current, polarity, insertion length, clearance, center-pin fit, and any equipment identification requirements before connecting. The center-pin diameter and electrical function have not been verified for this listing. Do not assume polarity or laptop compatibility from plug appearance alone.
Technical Specifications
- Part: RC-X741
- Power-supply connection: 2.1mm x 5.5mm female barrel socket
- Device connection: 5.0mm inside diameter x 7.4mm outside diameter straight male barrel plug with center pin
- Center pin: Present; exact diameter and wiring/function require verification
- Wire gauge: 18 AWG
- Cable length: 3 inches
- Type: DC barrel connector conversion pigtail
- Installation: Plug-in connections; no soldering required
Applications and Replacement Guidance
Use Part RC-X741 for connector-size adaptation only after confirming that the power supply, adapter, and equipment are compatible. Verify the full connector geometry, including the center pin and insertion length. A similar-looking laptop connector does not establish an HP, Dell, or other device match. No device-specific compatibility or charging recognition is claimed.
Compatibility Checklist
- Your power supply has a compatible 2.1mm x 5.5mm male barrel plug.
- Your equipment accepts the 5.0mm x 7.4mm male plug, with matching center-pin geometry, insertion length, and clearance.
- The power supply provides the equipment's required DC voltage and sufficient current capacity.
- The adapter's allowable voltage and current are verified for the installation; 18 AWG alone does not establish a complete assembly rating.
- The adapter's wiring and resulting device-end polarity are verified.
- Any center-pin identification or signaling requirements are checked against the equipment documentation; their support by this adapter is not verified.
Frequently Asked Questions
Which direction does this adapter convert?
Part RC-X741 accepts a 2.1mm x 5.5mm male power-supply plug in its female socket and provides a 5.0mm x 7.4mm straight male barrel plug with a center pin.
What is the center-pin diameter?
The exact center-pin diameter has not been verified. Confirm it by measurement or supplier documentation before relying on the adapter for a specific equipment connection.
Will it work with an HP or Dell laptop?
Brand alone is not enough to confirm compatibility. Check the exact equipment's connector geometry, DC voltage, current, polarity, and any center-pin identification requirements. No specific laptop match or charging recognition is claimed.
Does it change voltage or preserve polarity?
This is a connector conversion pigtail, not a voltage converter, regulator, or AC-to-DC power supply. Its polarity mapping and center-pin electrical function have not been verified for this listing. Verify wiring and device-end polarity before use.
Do I need to solder it, and how long is the cable?
No soldering is required; the adapter uses plug-in connections and a 3-inch cable. Confirm physical and electrical compatibility before connecting power.
