RJ11 ↔ DC Barrel 5.5/2.1mm
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Compatibility check and signal path analysis
Adapter Required
These connectors are not directly compatible. An adapter or converter cable is needed.
Signal Path
RJ11
Family
Network
Form Factor
Rectangular with tab (narrow)
Pin Count
6
Reversible
No
DC Barrel 5.5/2.1mm
Family
Power
Form Factor
Cylindrical barrel
Pin Count
2
Reversible
No
Notes
RJ11 to DC Barrel 5.5/2.1mm: Network and power connectors serve different purposes. PoE (Power over Ethernet) delivers power through RJ45, but this is built into the protocol, not a cable adaptation. The RJ11 (Network) and DC Barrel 5.5/2.1mm (Power) are from different connector families.